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
10期
774-776
,共3页
离子色谱%碳酸盐淋洗液%酸性气体
離子色譜%碳痠鹽淋洗液%痠性氣體
리자색보%탄산염림세액%산성기체
Ion Chromatography%Carbonate eluent%Acidic gas
目的 建立工作场所空气中多种酸性气体(氢氟酸、氯化氢或盐酸、三氧化硫或硫酸、磷酸、草酸)同时测定的离子色谱法.方法 采用多孔玻板吸收管装5 ml淋洗液采集工作场所空气(微孔滤膜采集硫酸雾、磷酸气溶胶,用5 ml淋洗液洗脱).AS14+AG14色谱柱进行分离,以碳酸盐(2.0+1.0)mmo]/L(Na2CO3-NaHCO3)为淋洗液,流速1.0 ml/min.利用电导检测器,以保留时间定性,峰面积定量.结果 工作场所空气中多种酸性气体在碳酸盐淋洗液中各离子分离良好,工作曲线的线性范围为0～20.0 mg/L,相关系数r＞0.999;检测限为3.6～115 μg/L,定量限为0.012～0.530 mg/L.采集15L空气进行测定,最低检测浓度为0.004 0～0.130 0 rmg/m3;回收率为99.7％～101.1％;样品在室温下可保存7d,离子间相互无干扰.结论 该方法检测工作场所空气中多种酸性气体,操作简便,分离效果好,灵敏度高,效率高,易于推广应用.
目的 建立工作場所空氣中多種痠性氣體(氫氟痠、氯化氫或鹽痠、三氧化硫或硫痠、燐痠、草痠)同時測定的離子色譜法.方法 採用多孔玻闆吸收管裝5 ml淋洗液採集工作場所空氣(微孔濾膜採集硫痠霧、燐痠氣溶膠,用5 ml淋洗液洗脫).AS14+AG14色譜柱進行分離,以碳痠鹽(2.0+1.0)mmo]/L(Na2CO3-NaHCO3)為淋洗液,流速1.0 ml/min.利用電導檢測器,以保留時間定性,峰麵積定量.結果 工作場所空氣中多種痠性氣體在碳痠鹽淋洗液中各離子分離良好,工作麯線的線性範圍為0～20.0 mg/L,相關繫數r＞0.999;檢測限為3.6～115 μg/L,定量限為0.012～0.530 mg/L.採集15L空氣進行測定,最低檢測濃度為0.004 0～0.130 0 rmg/m3;迴收率為99.7％～101.1％;樣品在室溫下可保存7d,離子間相互無榦擾.結論 該方法檢測工作場所空氣中多種痠性氣體,操作簡便,分離效果好,靈敏度高,效率高,易于推廣應用.
목적 건립공작장소공기중다충산성기체(경불산、록화경혹염산、삼양화류혹류산、린산、초산)동시측정적리자색보법.방법 채용다공파판흡수관장5 ml림세액채집공작장소공기(미공려막채집류산무、린산기용효,용5 ml림세액세탈).AS14+AG14색보주진행분리,이탄산염(2.0+1.0)mmo]/L(Na2CO3-NaHCO3)위림세액,류속1.0 ml/min.이용전도검측기,이보류시간정성,봉면적정량.결과 공작장소공기중다충산성기체재탄산염림세액중각리자분리량호,공작곡선적선성범위위0～20.0 mg/L,상관계수r＞0.999;검측한위3.6～115 μg/L,정량한위0.012～0.530 mg/L.채집15L공기진행측정,최저검측농도위0.004 0～0.130 0 rmg/m3;회수솔위99.7％～101.1％;양품재실온하가보존7d,리자간상호무간우.결론 해방법검측공작장소공기중다충산성기체,조작간편,분리효과호,령민도고,효솔고,역우추엄응용.
Objective To establish a method for determination of a variety of acid gas in the workplace air by Ion Chromatography.(hydrofluoric acid,hydrogen chloride or hydrochloric acid,sulfur anhydride or sulfuric acid,phosphoric acid,oxalic acid).Method The sample in workplace air was collected by the porous glass plate absorption tube containing 5 ml leacheate.(Sulfuric acid fog、phosphoric acid aerosol microporous membrane after collection,eluted with 5 ml of eluent.) To separated by AS 14+AG14 chromatography column,by carbonate (2.0+1.0) mmol/L (Na2CO3-NaHCO3) as eluent,flow rate of 1 ml/min,then analyzed by electrical conductivity detector.The retain time was used for qualitative and the peak area was used for quantitation.Results The each ion of a variety of acid gas in the air of workplace were excellent in carbonate eluent separation.The linear range of working curve of 0～20 mg/L.The correlation coefficient r＞0.999; lower detection limit of 3.6～115 μ g/L; quantitative limit of 0.012～0.53 rmg/L; acquisition of 15L air were measured,the minimum detection concentration is 0.004 0～0.13 mg/m3.The recovery rate is 99.7％～101.1％.In the sample without mutual interference ions.Samples stored at room temperature for 7 days.Conclusion The same analysis method,the detection of various acidic gases in the air of workplace,simple operation,good separation effect,high sensitivity,high detection efficiency,easy popularization and application.
