浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，采用大氣預(yù)濃縮儀-GC/FPD建立了環(huán)境空氣中9種含硫化合物的測(cè)定方法。結(jié)果表明,經(jīng)惰性化改造后的大氣預(yù)濃縮儀-GC/FPD測(cè)定系統(tǒng)的基線低,對(duì)硫化物無殘留。9種化合物的線性回歸方程的相關(guān)系數(shù)均在0.995以上,高、中、低3種濃度的空白加標(biāo)回收率分別為98.6%105.3%、99.1%103.7%、85.7%99.7%,除硫化氫的相對(duì)標(biāo)準(zhǔn)偏差為10.9%外,其余8種含硫化合物的相對(duì)標(biāo)準(zhǔn)偏差可控制在6.9%以內(nèi)。當(dāng)進(jìn)樣體積為400 m L時(shí),方法的檢出限在0.10～1.1 ng/m3。CO2、H2O對(duì)實(shí)際樣品的測(cè)定無干擾。因此,該方法能夠滿足目前監(jiān)測(cè)工作的要求,更加適用于環(huán)境空氣中痕量含硫化合物的測(cè)定。

工作場(chǎng)所空氣有毒物質(zhì)測(cè)定 硫化物測(cè)定專用柱  測(cè)試譜圖：







Special column for determination of toxic substances and sulfides in workplace air
Detailed information on the dedicated column for measuring sulfides in workplace air for the determination of toxic substances:
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a method for the determination of 9 sulfur-containing compounds in ambient air using an atmospheric pre concentrator GC/FPD. The results indicate that the baseline of the atmospheric pre concentration instrument GC/FPD measurement system after inerting modification is low and there is no residue of sulfides. The correlation coefficients of the linear regression equations for 9 compounds are all above 0.995. The blank spiked recovery rates for high, medium, and low concentrations are 98.6%, 105.3%, 99.1%, 103.7%, 85.7%, and 99.7%, respectively. Except for hydrogen sulfide with a relative standard deviation of 10.9%, the relative standard deviation of the other 8 sulfur-containing compounds can be controlled within 6.9%. When the injection volume is 400 mL, the detection limit of the method is between 0.10 and 1.1 ng/m3. CO2 and H2O do not interfere with the determination of actual samples. Therefore, this method can meet the requirements of current monitoring work and is more suitable for the determination of trace sulfur-containing compounds in ambient air.
Name: Special Column for Sulfide Determination
Model: HH sulfade-III
Specification: 3m * 3mm
Maximum operating temperature: 120 ° C
Number: 20240914006
Application: GB 14678-1993 Air quality - Determination of hydrogen sulfide, methyl mercaptan, methyl sulfide and dimethyl disulfide - Gas chromatography method
Suitable for Agilent 689078207890886088890; Shimadzu GC-2010, GC-2014，GC-2030； Thermo Fisher 1310; Brooke, PE， Panno, Fuli, Kechuang, Tianrui, Tianmei, Huaai, Beifen Ruili, etc
Measurement of toxic substances in workplace air using a dedicated column for sulfide detection, spectrum diagram: