摘要
选取固相萃取GC-MS法定量检测喷涂废水中四种邻苯二甲酸酯类(PAEs),运用正交设计法,研究了pH、洗脱剂、洗脱体积、洗脱速率和水样流速对废水中PAEs回收率的影响。结果表明,pH为2.5时回收率最佳(均>100%);在该pH下,洗脱剂对4种PAEs的回收率影响最大,水样流速次之,洗脱速率与洗脱体积对4种PAEs的回收率影响相对较小。样品前处理最优参数为:水样流速8mL/min、洗脱剂为乙酸乙酯、洗脱体积4mL、洗脱速率2mL/min;该条件下4种PAEs的线性范围为0.2～8.0μg/mL,相关系数均>0.99,喷漆废水中平均加标回收率为61.1%～103%,相对标准偏差为3.1%～14.6%,均可满足试验要求。
GC-MS with solid phase extraction was selected for quantitative determination of 4 kinds of phthalates( PAEs) in spray coating wastewater, and effect of pH, eluting solvent, volume of elution, elution rate and flow rate of wastewater on recovery of PAEs in wastewater by orthogonal design were studied. Results indicated that the best recovery was obtained at pH value of 2.5. At the optimum pH conditions, orthogonal experiment results showed that eluting solvent had the greatest impact on recovery of PAEs, fo...
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第6期124-127,163,共5页
Environmental Science & Technology
基金
环保公益性行业科研专项(200709028
200709050
200709019)
