环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2014年
1期
39-41,48
,共4页
刘金巍%蔡五田%张涛%曹月婷
劉金巍%蔡五田%張濤%曹月婷
류금외%채오전%장도%조월정
苯%乙苯%二甲苯%便携式气相色谱法%石油污染%地下水
苯%乙苯%二甲苯%便攜式氣相色譜法%石油汙染%地下水
분%을분%이갑분%편휴식기상색보법%석유오염%지하수
Benzene%Ethylbenzene%Xylene%Portable GC%Petroleum pollution%Groundwater
采用便携式气相色谱法测定石油污染地地下水中苯、乙苯和二甲苯,通过试验选择出测定的最佳色谱条件和适宜内标物,并对样品平衡时间、NaCl用量、取样后 VOA瓶中液-气体积比等条件进行优化。试验表明,该方法在0 mg/L~2.00 mg/L范围内线性良好,相关系数均>0.98;方法检出限为0.05 mg/L ~0.15 mg/L。用该方法和吹扫捕集-气相色谱/质谱联用法同时测定实际水样,两种方法测定结果具有良好的一致性。
採用便攜式氣相色譜法測定石油汙染地地下水中苯、乙苯和二甲苯,通過試驗選擇齣測定的最佳色譜條件和適宜內標物,併對樣品平衡時間、NaCl用量、取樣後 VOA瓶中液-氣體積比等條件進行優化。試驗錶明,該方法在0 mg/L~2.00 mg/L範圍內線性良好,相關繫數均>0.98;方法檢齣限為0.05 mg/L ~0.15 mg/L。用該方法和吹掃捕集-氣相色譜/質譜聯用法同時測定實際水樣,兩種方法測定結果具有良好的一緻性。
채용편휴식기상색보법측정석유오염지지하수중분、을분화이갑분,통과시험선택출측정적최가색보조건화괄의내표물,병대양품평형시간、NaCl용량、취양후 VOA병중액-기체적비등조건진행우화。시험표명,해방법재0 mg/L~2.00 mg/L범위내선성량호,상관계수균>0.98;방법검출한위0.05 mg/L ~0.15 mg/L。용해방법화취소포집-기상색보/질보련용법동시측정실제수양,량충방법측정결과구유량호적일치성。
A method for determination of benzene,ethylbenzene and xylene in polluted groundwater by porta-ble gas chromatography using internal standard was established.The effects such as the choice of internal standard, amount of salt,equilibration time,ambient temperature,the volume ratio of liquid-gas,the number of repeated meas-urement were discussed.The results show that the internal standard method was effective to control the changes of environmental conditions.Xylene were separated by CP-Wax 52 CB(4 m)capillary column.The detection limits of method were 0.05 mg/L~0.15 mg/L,the linear ranges were 0 mg/L~2.00 mg/L.The correlation of test data be-tween this method and purge-trap-gas chromatography/mass spectrometry were good.This method can be used for the site screening and determination of benzene,ethylbenzene and xylene in polluted water.