中华劳动卫生职业病杂志
中華勞動衛生職業病雜誌
중화노동위생직업병잡지
CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES
2014年
8期
625-627
,共3页
工作场所%空气%氯化苦%色谱法,气相
工作場所%空氣%氯化苦%色譜法,氣相
공작장소%공기%록화고%색보법,기상
Workplace%Air%Chloropicrin%Gas chromatography
目的 建立工作场所空气中氯化苦的吸收液采集-气相色谱测定方法.方法 采用多孔玻板吸收管无水乙醇采集空气中的氯化苦,直接进样,经色谱柱分离,微池电子捕获检测器(μECD)检测,并与国家标准检测方法进行比较.结果 该方法在0～3.0 μg/ml浓度范围中呈线性关系,回归方程为y=3 488.80x-57.84,相关系数r=0.999 4;检出限为0.003 μg/ml,最低检出浓度为0.005 mg/m3(采样体积以3.0 L计);平均加标回收率为98.9～103.2％;精密度批内为0.96％～2.12％,批间为2.75％～4.59％;采样效率为98.6％;样品在4℃冰箱内存放至少可保存5d.与国家标准检测方法相比,两者检测结果比值为97.7％～108.0％.结论 该方法各项性能指标均符合GBZ/T 210.4-2008《工作场所空气中化学物质测定方法》的要求,适用于工作场所空气中氯化苦的测定.
目的 建立工作場所空氣中氯化苦的吸收液採集-氣相色譜測定方法.方法 採用多孔玻闆吸收管無水乙醇採集空氣中的氯化苦,直接進樣,經色譜柱分離,微池電子捕穫檢測器(μECD)檢測,併與國傢標準檢測方法進行比較.結果 該方法在0～3.0 μg/ml濃度範圍中呈線性關繫,迴歸方程為y=3 488.80x-57.84,相關繫數r=0.999 4;檢齣限為0.003 μg/ml,最低檢齣濃度為0.005 mg/m3(採樣體積以3.0 L計);平均加標迴收率為98.9～103.2％;精密度批內為0.96％～2.12％,批間為2.75％～4.59％;採樣效率為98.6％;樣品在4℃冰箱內存放至少可保存5d.與國傢標準檢測方法相比,兩者檢測結果比值為97.7％～108.0％.結論 該方法各項性能指標均符閤GBZ/T 210.4-2008《工作場所空氣中化學物質測定方法》的要求,適用于工作場所空氣中氯化苦的測定.
목적 건립공작장소공기중록화고적흡수액채집-기상색보측정방법.방법 채용다공파판흡수관무수을순채집공기중적록화고,직접진양,경색보주분리,미지전자포획검측기(μECD)검측,병여국가표준검측방법진행비교.결과 해방법재0～3.0 μg/ml농도범위중정선성관계,회귀방정위y=3 488.80x-57.84,상관계수r=0.999 4;검출한위0.003 μg/ml,최저검출농도위0.005 mg/m3(채양체적이3.0 L계);평균가표회수솔위98.9～103.2％;정밀도비내위0.96％～2.12％,비간위2.75％～4.59％;채양효솔위98.6％;양품재4℃빙상내존방지소가보존5d.여국가표준검측방법상비,량자검측결과비치위97.7％～108.0％.결론 해방법각항성능지표균부합GBZ/T 210.4-2008《공작장소공기중화학물질측정방법》적요구,괄용우공작장소공기중록화고적측정.
Objective To establish a method for determination of chloropicrin in the air of workplace by gas chromatography with liquid absorption collection.Methods Chloropicrin in sample air was collected by absolute ethyl alcohol in a porous glass plate absorption tube.Following direct sample loading,samples were separated by gas chromatography and detected with a micro-electron capture detector.The present method was compared with the national standard method.Results The range of linearity was 0-3.0 μg/ml,and the regression equation was y=3488.80x-57.84,with a correlation coefficient of 0.999 4.The detection limit was 0.003 μg/ml,with a minimum detectable concentration of 0.005 mg/m3 based on a 3.0 L sampling volume.The average recovery rate was 98.9％～103.2％.The within-run precision was 0.96％-2.12％,and the between-run precision was 2.75％-4.59％.The sampling efficiency was 98.6％.Samples in porous glass plate absorption tube could be stored at 4℃ for at least 5 days.The result ratio of this method to the national standard method was 97.7％-108.0％.Conclusion The present method meets the requirements of "Guide for establishing occupational health standards-Part 4:Determination methods of air chemicals in workplace" (GBZ/T 210.4-2008),and is feasible for determination of chloropicrin in the air of workplace.
