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Headspace-GC is used to analyze liquid or solid samples by heating them to a given temperature and then injecting a constant volume of the resulting gas into a GC-MS system. Headspace-GC is used for a wide range of purposes, such as to analyze gas components in environmental, food, What type of analysis is the headspace pharmaceutical, pharmaceutical, and industrial material fields ( including (HS) method used for? emulsions, polymers, composite parts, and so on) or to analyze the evolved gases generated from samples when heated. For quantitative analysis, a constant quantity of gas phase at gas-liquid or gas-solid equilibrium state is injected into the GCMS system.
1 Gene Genera rall
Headspace method
2 Gene Genera rall
Static headspace analysis refers to normal headspace-GC analysis. In contrast, dynamic headspace analysis involves Static and dynamic What do static and dynamic headspace using purge-trap or other methods to force out gas headspace analysis mean? components through purging and then temporarily concentrate methods the gas sample before injection. This means that dynamic HS can provide higher sensitivity than static HS.
What is the headspace trap method?
It temporarily traps and concentrates gas samples acquired from the headspace by static HS before injection. This allows sampling more gas than static headspace sampling. Therefore, samples can be measured with higher sensitivity. Somewhere intermediate between static and dynamic headspace methods, the trap method is probably closer to dynamic HS.
Can it simultaneously analyze all VOCs (including 1,4-dioxane and PVC monomers) in tap water?
Can it analyze moldy odor components in tap water?
6 Applications Phthalate esters
Can it analyze SVOCs from chemical products using thermal extraction?
Yes, phthalate esters used as plasticizers in plastics can be thermally extracted for analysis. The heating temperature is 300 °C for the Agilent 7697A, 200 °C for the Jeol S-TArpHS, and 210 °C for PE. That means only Agilent and Shimadzu models are capable of thermal extraction. It can be used as a substitute for a thermal desorption system.
Smell and direct 7 Applications heating
We use a thermal desorption desorption system to The HS-20Trap can heat samples to a maximum 300 °C, analyze samples placed directly in the which means measurements equivalent to using a thermal tube. Is something equivalent to that desorption system are possible by placing samples in a vial. possible?
3 Gene Genera rall
Headspace trap method
Water quality, VOCs, 1,44 Applications dioxane, PVC monomers 5 Applications
Water quality and moldy odor
Yes (loop mode)
Yes (trap or loop mode)
The sample injection volume can be varied easily by changing the split ratio. Can it measure highly concentrated and The Agilent 7697A and Jeol models use a split configuration, dilute samples easily? whereas PE uses a pressure balance configuration. One disadvantage of the pressure balance configuration is that it is diff icult to set parameters for split analysis.
8 Applications
High and low concentrations
9 Applications Column
Are there restrictions restrictions on the the separation separation columns that can be used?
Capillary columns from 0.1 mm to 0.53 mm can be used.
What features are superior to competitor headspace systems?
The maximum heating temperature for HS-20 and HS20Trap models is 300 °C. The HS-20Trap is the only trap-HS system available with an electronically cooled trap (as of October 2012). An optional barcode reader can be installed.
What type of systems does the HS-20 series include?
HS-20Trap: Switchable between trap and loop modes, with sample line heating to maximum 300 °C HS-20: Loop model with sample line heating to maximum 300 C HS-20LT: Loop model with sample line heating to maximum 220 °C and connectability to left side of GC/GCMS or GC2014 systems
10 Specifications Characteristics
11 Specifications System
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12 Specifications Vials
W hat vial sizes can be used?
13 Specifications Barcode reader
Can a barcode reader be used for managing samples?
10 mL and 20 mL vials can be used. Both sizes can be used mixed together (without using an attachment). attachment).
Yes. A barcode reader function is included only on the Shimadzu and Agilent 7697A models. A barcode reader is essential for sample management.
How many samples can the autosampler hold?
90 samples can be placed in the sample tray. The Agilent 7697A holds 111 samples, the Jeol S-TArpHS holds 50 samples, and the PE holds either 40 or 110. The number of samples necessary is determined by the number of samples per batch and how long samples are stored, but 90 samples should be more than enough from the viewpoint of precision control, such as confirming variations in instrument sensitivity.
15 Specifications Heating
What is the maximum temperature for heating vials? Also, is evolved gas analysis possible?
The maximum oven temperature is 300 °C. Therefore, gases can be generated at temperatures up to that maximum. However, keeping samples at high temperatures can c ause problems with gasses generated from the s eptum. In such cases, use heat resistant septa (silicone). The maximum temperature is 300 °C for the Agilent 7697A, 200 °C for the Jeol S-TArpHS, and 210 °C for PE models. Only the Shimadzu system can perform evolved gas analysis at high temperature and also trap and concentrate trace amounts of gas.
Heating and 16 Specifications overlapping
How many samples can be heated by overlapping?
12 vials can be heated by overlapping. The Agilent 7697 and PE can heat 12 vials, but the Jeol STArpHS can only heat one vial. Consequently, the Jeol STArpHS is not suitable for high speed analysis.
17 Specifications Sample injection
What method is used to inject samples into the GC/MS system?
Loop method. HS analysis involves injecting part of the gas phase at equilibrium inside sample vials into the separation column, where three sampling methods are used; syringe, loop, and pressure balance methods. The Agilent 7697 and Jeol S-TAr pHS models use the loop method, whereas PE uses the pressure balance method. The advantage of the loop method is that it allows easily varying the injection volume by changing the split ratio.
18 Specifications Loop
W hat is the loop volume?
The standard system includes a 1 mL loop, but optional 3 mL (for high sensitivity analysis) and 0.2 mL (for high concentration analysis) analysis) l oops are also available.
What is an electronically cooled trap?
It is a function that cools the trap tube. tube. This f eature is only available from Shimadzu. The feature is especially useful for trapping gases with low boiling points, such as VVOCs, or to prevent breakthrough from the trap tube.
14 Specifications
Sampler sample count
19 Specifications
Electronically cooled trap
20 Specifications Trap and switching
How do you switch between modes using the trap or not?
21 Specifications Software
Can the system be controlled via a computer?
The HS-20Trap can switch between trap and loop modes using the method file.
Yes, GC-2010 and GC-2014 series systems can be controlled using LabSolutionsLC/GC LabSolutionsLC/GC and GCMS-QP2010 series systems can be controlled using HSS control software.
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23 Specifications Accessories
What type of accessories are available?
Tools are included, but not vials or a crimper. Therefore, they need to be provided separately.
Utilities, electricity, What utilities are required? and gas
Only electricity and carrier gas are required to operate the unit. Performance is guaranteed for room temperatures from 18 °C to 28 °C and humidity of 70 % or less (functionality is guaranteed for room temperatures from 15 °C to 30 °C).
Gas and electricity How much gas and electricity is consumption consumed during typical analysis?
The HS-20 requires a 1200 VA power supply and the HS20Trap requires a 1500 VA power supply. They normally consume 300 to 450 watts, given typical analytical conditions. Carrier gas consumption varies depending on the column and analytical analytical conditions, but given typical analytical conditions it is about 2 to 6 liters per hour.
24 Utiliti Utilities es
25 Utiliti Utilities es
Yes, it can be installed on GC-2010, GC-2014, and GCMSQP2010 series systems. However, there may be restrictions if other pretreatment equipment is connected. For more details, refer to the optional product installation guide*.
26 Installat Installation ion Retrofitting
Can it be installed on an existing GC/MS system?
How big is the unit and where is it installed (with respect to the GCMS system)?
Attach HS-20 and HS-20Trap units on the right side of the GC unit. The outside dimensions are W546 x D540 x H440 mm. To use an HS unit in addition to an Optic4, TD-20, or other optional device that attaches to the right side of the GC unit, we recommend the HS-20LT, which attaches to the top of the GC unit. (Note, however, that the maximum sample line heating temperature for the HS-20LT is 220 °C. This means it cannot be used for high temperature headspace analysis.)
W ha hat sort of mai nt ntenance i s r eq equi re red?
Contamination may build up inside the HS unit after longterm use. Such contamination contamination could decrease sensitivity for specific components or cause ghost peaks. To prevent such symptoms, maintain the system by replacing the transfer line.
27 Installat Installation ion
28 Ser vi vice
Maintenance
* Information for the HS-20 is scheduled to be included in the optional product installation guideline in January.
Keywords
Question
Response
Headspace-GC is used to analyze liquid or solid samples by heating them to a given temperature and then injecting a constant volume of the resulting gas into a GC-MS system. Headspace-GC is used for a wide range of purposes, such as to analyze gas components in environmental, food, What type of analysis is the headspace pharmaceutical, pharmaceutical, and industrial material fields ( including (HS) method used for? emulsions, polymers, composite parts, and so on) or to analyze the evolved gases generated from samples when heated. For quantitative analysis, a constant quantity of gas phase at gas-liquid or gas-solid equilibrium state is injected into the GCMS system.
1 Gene Genera rall
Headspace method
2 Gene Genera rall
Static headspace analysis refers to normal headspace-GC analysis. In contrast, dynamic headspace analysis involves Static and dynamic What do static and dynamic headspace using purge-trap or other methods to force out gas headspace analysis mean? components through purging and then temporarily concentrate methods the gas sample before injection. This means that dynamic HS can provide higher sensitivity than static HS.
What is the headspace trap method?
It temporarily traps and concentrates gas samples acquired from the headspace by static HS before injection. This allows sampling more gas than static headspace sampling. Therefore, samples can be measured with higher sensitivity. Somewhere intermediate between static and dynamic headspace methods, the trap method is probably closer to dynamic HS.
Can it simultaneously analyze all VOCs (including 1,4-dioxane and PVC monomers) in tap water?
Can it analyze moldy odor components in tap water?
6 Applications Phthalate esters
Can it analyze SVOCs from chemical products using thermal extraction?
Yes, phthalate esters used as plasticizers in plastics can be thermally extracted for analysis. The heating temperature is 300 °C for the Agilent 7697A, 200 °C for the Jeol S-TArpHS, and 210 °C for PE. That means only Agilent and Shimadzu models are capable of thermal extraction. It can be used as a substitute for a thermal desorption system.
Smell and direct 7 Applications heating
We use a thermal desorption desorption system to The HS-20Trap can heat samples to a maximum 300 °C, analyze samples placed directly in the which means measurements equivalent to using a thermal tube. Is something equivalent to that desorption system are possible by placing samples in a vial. possible?
3 Gene Genera rall
Headspace trap method
Water quality, VOCs, 1,44 Applications dioxane, PVC monomers 5 Applications
Water quality and moldy odor
Yes (loop mode)
Yes (trap or loop mode)
The sample injection volume can be varied easily by changing the split ratio. Can it measure highly concentrated and The Agilent 7697A and Jeol models use a split configuration, dilute samples easily? whereas PE uses a pressure balance configuration. One disadvantage of the pressure balance configuration is that it is diff icult to set parameters for split analysis.
8 Applications
High and low concentrations
9 Applications Column
Are there restrictions restrictions on the the separation separation columns that can be used?
Capillary columns from 0.1 mm to 0.53 mm can be used.
What features are superior to competitor headspace systems?
The maximum heating temperature for HS-20 and HS20Trap models is 300 °C. The HS-20Trap is the only trap-HS system available with an electronically cooled trap (as of October 2012). An optional barcode reader can be installed.
What type of systems does the HS-20 series include?
HS-20Trap: Switchable between trap and loop modes, with sample line heating to maximum 300 °C HS-20: Loop model with sample line heating to maximum 300 C HS-20LT: Loop model with sample line heating to maximum 220 °C and connectability to left side of GC/GCMS or GC2014 systems
10 Specifications Characteristics
11 Specifications System
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Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
12 Specifications Vials
W hat vial sizes can be used?
13 Specifications Barcode reader
Can a barcode reader be used for managing samples?
10 mL and 20 mL vials can be used. Both sizes can be used mixed together (without using an attachment). attachment).
Yes. A barcode reader function is included only on the Shimadzu and Agilent 7697A models. A barcode reader is essential for sample management.
How many samples can the autosampler hold?
90 samples can be placed in the sample tray. The Agilent 7697A holds 111 samples, the Jeol S-TArpHS holds 50 samples, and the PE holds either 40 or 110. The number of samples necessary is determined by the number of samples per batch and how long samples are stored, but 90 samples should be more than enough from the viewpoint of precision control, such as confirming variations in instrument sensitivity.
15 Specifications Heating
What is the maximum temperature for heating vials? Also, is evolved gas analysis possible?
The maximum oven temperature is 300 °C. Therefore, gases can be generated at temperatures up to that maximum. However, keeping samples at high temperatures can c ause problems with gasses generated from the s eptum. In such cases, use heat resistant septa (silicone). The maximum temperature is 300 °C for the Agilent 7697A, 200 °C for the Jeol S-TArpHS, and 210 °C for PE models. Only the Shimadzu system can perform evolved gas analysis at high temperature and also trap and concentrate trace amounts of gas.
Heating and 16 Specifications overlapping
How many samples can be heated by overlapping?
12 vials can be heated by overlapping. The Agilent 7697 and PE can heat 12 vials, but the Jeol STArpHS can only heat one vial. Consequently, the Jeol STArpHS is not suitable for high speed analysis.
17 Specifications Sample injection
What method is used to inject samples into the GC/MS system?
Loop method. HS analysis involves injecting part of the gas phase at equilibrium inside sample vials into the separation column, where three sampling methods are used; syringe, loop, and pressure balance methods. The Agilent 7697 and Jeol S-TAr pHS models use the loop method, whereas PE uses the pressure balance method. The advantage of the loop method is that it allows easily varying the injection volume by changing the split ratio.
18 Specifications Loop
W hat is the loop volume?
The standard system includes a 1 mL loop, but optional 3 mL (for high sensitivity analysis) and 0.2 mL (for high concentration analysis) analysis) l oops are also available.
What is an electronically cooled trap?
It is a function that cools the trap tube. tube. This f eature is only available from Shimadzu. The feature is especially useful for trapping gases with low boiling points, such as VVOCs, or to prevent breakthrough from the trap tube.
14 Specifications
Sampler sample count
19 Specifications
Electronically cooled trap
20 Specifications Trap and switching
How do you switch between modes using the trap or not?
21 Specifications Software
Can the system be controlled via a computer?
The HS-20Trap can switch between trap and loop modes using the method file.
Yes, GC-2010 and GC-2014 series systems can be controlled using LabSolutionsLC/GC LabSolutionsLC/GC and GCMS-QP2010 series systems can be controlled using HSS control software.
The world’s largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
23 Specifications Accessories
What type of accessories are available?
Tools are included, but not vials or a crimper. Therefore, they need to be provided separately.
Utilities, electricity, What utilities are required? and gas
Only electricity and carrier gas are required to operate the unit. Performance is guaranteed for room temperatures from 18 °C to 28 °C and humidity of 70 % or less (functionality is guaranteed for room temperatures from 15 °C to 30 °C).
Gas and electricity How much gas and electricity is consumption consumed during typical analysis?
The HS-20 requires a 1200 VA power supply and the HS20Trap requires a 1500 VA power supply. They normally consume 300 to 450 watts, given typical analytical conditions. Carrier gas consumption varies depending on the column and analytical analytical conditions, but given typical analytical conditions it is about 2 to 6 liters per hour.
24 Utiliti Utilities es
25 Utiliti Utilities es
Yes, it can be installed on GC-2010, GC-2014, and GCMSQP2010 series systems. However, there may be restrictions if other pretreatment equipment is connected. For more details, refer to the optional product installation guide*.
26 Installat Installation ion Retrofitting
Can it be installed on an existing GC/MS system?
How big is the unit and where is it installed (with respect to the GCMS system)?
Attach HS-20 and HS-20Trap units on the right side of the GC unit. The outside dimensions are W546 x D540 x H440 mm. To use an HS unit in addition to an Optic4, TD-20, or other optional device that attaches to the right side of the GC unit, we recommend the HS-20LT, which attaches to the top of the GC unit. (Note, however, that the maximum sample line heating temperature for the HS-20LT is 220 °C. This means it cannot be used for high temperature headspace analysis.)
W ha hat sort of mai nt ntenance i s r eq equi re red?
Contamination may build up inside the HS unit after longterm use. Such contamination contamination could decrease sensitivity for specific components or cause ghost peaks. To prevent such symptoms, maintain the system by replacing the transfer line.
27 Installat Installation ion
28 Ser vi vice
Maintenance
* Information for the HS-20 is scheduled to be included in the optional product installation guideline in January.
