| Sample Extraction Needle |
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| Characteristics of NeedlEx |
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| กNeedlEx is easy to operate for extraction and excellent in the reproducibility. |
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The objective sample is sucked by NeedlEx installed to the gas sampler
and extrated selectively in a short time. |
| กThe absorbed sample can be stored in the NeedlEx. |
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The extracted sample is stored for approximately ten days by the teflon
lod plugs for both ends of NeedlEx. |
| กNo additional apparatus needs for the adsorption and desorption if sample. |
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The adsorption and desorption of sample is performed by thr heat of injection
port of gas chromatograph. The extracted sample is injected into GC with
1mL N2 by the gas tight syringe. |
| กNeedlEx can be used repeatably. |
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By conditioning NeedlEx in the injection port of GC for 3 minutes after
analysis, repeat use can be performed about 25 - 30 times. |
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| Items of NeedlEx |
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Organic solvent |
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Extraction for general orgaic solvents (Ethyl acetate, iso-Butanol, Methyl
isobuthyl ketone, Toluene, Xylene, Stylene and so on) |
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Trimethylamine |
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Lower amins (Trimethylamine) |
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Fatty acid |
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Fatty acid (Propionic acid, Isobutyric acid, n-Butyric acid, Isovaleric
acid) |
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Petroleum |
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Identification of petroleum |
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| Specification of NeedlEx |
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Inner diaameter : 0.5mm |
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Outer dimeter : 0.7mm |
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Length : 85mm Luer lock type needle with side-hole |
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| กExtraction limit and basic sampling volume |
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| 1) |
Organic solvent type |
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The extraction limit depend on solvents. In the case of below 100ng/mL
of the organic solvent concentration in the air, please refer to the sampling
volume listed below..B |
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Extraction
limit |
Sample |
| 10mL |
Methyl acetate, Acetone, cis-Dichloroethylene, Chloroform, Tetrahydrofuran,
1,1,1-trichloroethan, Tetrachloromethane, Trichloroethylene, 1,2- dichloroethane,
Ethanol, 2-Propanol |
| 50mL |
Ethyl acetate, Acetic acid isopropyl, Methyl ethyl ketone |
| 100mL |
1-Butanol, 2-Bitanol, iso-Butanol, Methyl cellosolve, Acetic acid n- propyl,
1,4- dioxane, Ethylcellosolve, Isoamyl alcohol, Methyl isobutyl ketone,
Methyl n- butyl ketone, N,N- dimethylformamide, Acetic acid isobutyl, Acetic
acid n-isobutyl, Toluene, Tetrachloroethylene, Chlorobenzene, Ethylbenzene,
XyleneI, soamyl acetate, Acetic acid n- amyl, Cyclohexanol, Cyclohexanone,
Styrene, Butylcellosolve, 1,1,2,2- tetrachloroethane, Methylcyclohexanone,
Methylcyclohexanol, Dichlorobenzene |
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@*@Methanol, dichloromethane and diethylether which are low boilng solvents
are not applied.
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| 2) |
Trimethylamine type |
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Trimethylamine can be extracted until 200ng (as an absolute amount) |
| 3) |
Fatty acid type |
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Propionic acid, Isobutyric acid, n-Butyric acid, Isovaleric acid can be
extracted until 10ug (as an absolute amount) |
| 4) |
Petroleum type |
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Gasoline can be sampled until 100mL and Kerosene & Light oil can be
sampled until 200mL.
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| Disposal each parts of NeedlEx according to the type. |
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In the case of the needle of the NeedlEx, please dispose as a waste metal
after putting the needle away in a metal. |
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| Reference |
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กApplication Chromatogram
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For Organic solvent |
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Standard organic solvebts
(20mL sampling) |
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For Trimethylamine |
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Trimethylamine in head space gas
of dry fowl droppings
(100mL sampling) |
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For Fatty acid |
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Fatty acid in head space gas of shoes
(300mL sampling) |
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For Petroleum |
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Gasoline 0.1 uL/L in N2
(100mL sampling) |
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Column: ULBON HR-1
30 m x 0.32 mm I.D. Df:
0.25 สm
Column temp: 50 (2 min hold) ` 250 ,
Program rate 10
/min
Split ratio: 10:1
Injection : 1 mL (280 )
Detector: FID (250 )
Carrier gas: He 1.7 mL/min@
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Kerosene 0.1uL/L un N2
(100mL sampling) |
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Column: ULBON HR-1
30 m x 0.32 mm I.D. Df:
0.25 สm
Column temp: 50 (2 min hold) ` 250 ,
Program rate 10
/min
Split ratio: 10:1
Injection : 1 mL (280 )
Detector: FID (250 )
Carrier gas: He 1.7 mL/min@
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Light oil 0.1uL/L in N2
(100mL sampling) |
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Column: ULBON HR-1
30 m x 0.32 mm I.D. Df:
0.25 สm
Column temp: 50 (2 min hold) ` 250 ,
Program rate 10
/min
Split ratio: 10:1
Injection : 1 mL (280 )
Detector: FID (250 )
Carrier gas: He 1.7 mL/min@
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Mixture (gasoline,kerosene) 0.1uL/L in N2
(100mL sampling) |
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Column: ULBON HR-1
30 m x 0.32 mm I.D. Df:
0.25 สm
Column temp: 50 (2 min hold) ` 250 ,
Program rate 10
/min
Split ratio: 10:1
Injection : 1 mL (280 )
Detector: FID (250 )
Carrier gas: He 1.7 mL/min@
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