超声萃取-气相色谱法测定土壤中石油烃
Determination of Petroleum Hydrocarbons in Soil by GC Combined with Ultrasonic Extraction
摘 要
采用探头式超声波发生器萃取-气相色谱-火焰离子检测法（GC-FID）测定土壤中33种石油烃（C8~C40）。采用正交试验考察了萃取剂及其用量、超声时间和萃取次数等4个因素对土壤中石油烃的萃取效果的影响，得到最佳萃取条件为：10.00 g样品用30 mL二氯甲烷超声萃取10 min，萃取2次。33种石油烃的线性范围在500 mg·L-1内，检出限（3s）为0.10~0.40 mg·L-1。加标回收率为83.2%~106%，测定值的相对标准偏差（n=7）为0.80%~5.5%。
超声萃取
石油烃
土壤
GC
ultrasonic extraction
petroleum hydrocarbon
soil
Abstract
A method was established for the determination of 33 petroleum hydrocarbons from C8 to C40 in soil by gas chromatography with flame ion detector after ultrasonic extraction with a probe ultrasonic generator. The effect of extraction solvent and its dosage, ultrasonic time and extraction times on extraction efficiency for petroleum hydrocarbons in soil was investigated by orthogonal experiments, giving the optimized condition was as follow:10.00 g of sample was extracted ultrasonically with 30 mL of dichloromethane as extraction solvent for 10 min and 2 times. Linearity ranges of 33 petroleum hydrocarbons were within 500 mg·L-1 and detection limits (3s) were 0.10-0.40 mg·L-1. Recovery rates obtained by standard addition method were in the range of 83.2%-106% and RSDs (n=7) were in the range of 0.80%-5.5%.
中图分类号 O657.7 DOI 10.11973/lhjy-hx201803006
所属栏目 工作简报
基金项目 浙江省地勘局产业结构调整专项资金（地质类）资助（浙地勘发（2016）7号）
收稿日期 2017/2/18
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备注曹攽(1981-),女,辽宁辽阳人,高级工程师,硕士,主要从事环境有机物分析工作,caob1203@163.com
引用该论文: CAO Ban,HU Zuguo,ZHENG Cunjiang,LIU Qinghui. Determination of Petroleum Hydrocarbons in Soil by GC Combined with Ultrasonic Extraction[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2018, 54(3): 275～279
曹攽,胡祖国,郑存江,刘清辉. 超声萃取-气相色谱法测定土壤中石油烃[J]. 理化检验－化学分册, 2018, 54(3): 275～279
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参考文献
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【3】CARINA P, CATARINA M, PAULA G. Evaluation of the actual standard procedures for analysis of total extractable hydrocarbons in environmental water matrices[J]. Desalination, 2011,273(2/3):308-315.
【4】许雄飞,丁庆云,张秀影,等.快速溶剂萃取红外分光光度法测定土壤中石油类[J].中国环境监测, 2008,24(3):4-6.
【5】李胜勇,李先国,邓伟,等.超声萃取气相色谱法检测海洋沉积物中的总石油烃[J].海洋湖沼通报, 2013(2):93-98.
【6】游静,王国俊,俞惟乐.超临界流体萃取在环境中分析的应用[J].色谱, 1999(1):30-33.
【7】张文,李建兵,韩有定,等.超声波净化石油污染土壤试验研究[J].环境工程学报, 2010,4(4):940-945.
【8】姬志宏,姬志新,李红梅,等.石油类污染物红外吸收光谱法检测研究[J].黄河水利职业技术学院学报, 2012(1):26-29.
【9】GRANT T W, JOSE M S D, JOEL K, et al. Rapid prediction of total petroleum hydrocarbons in soil using a handheld mid-infrared field instrument[J]. Talanta, 2016,160:410-416.
【10】杨慧娟,刘五星,骆永明,等.气相色谱-质谱分段测定土壤中的可提取总石油烃[J].土壤, 2014,46(1):134-138.
【11】张欢燕,王臻,周守毅.环境中总石油烃的气相色谱分析测定[J].环境监控与预警, 2013,5(2):24-27.
【12】金义宁,刘雯,倪俊.超声波萃取/气相色谱(GC-FID)测定土壤中的总石油烃(TPH)[J].能源与环境, 2009,(33):110-112.
【13】WANG Z D, MERV F. Developments in the analysis of petroleum hydrocarbons in oils, petroleum products and oil-spill-related environmental samples by gas chromatography[J]. Jounal of Chromatography A, 1997,774(1/2):51-78.
【14】王刚,王敏,牛晓伟,等.超声索氏萃取重量法测定土壤中总石油烃含量[J].分析化学, 2010,38(3):417-420.
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