固相萃取高效液相色谱荧光法测定水体中超痕量苯并[a]芘

来源 :陕西师范大学学报(自然科学版) | 被引量 : 0次 | 上传用户:shirley09liu
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采用Supelco C18固相萃取小柱富集苯并[a]芘,应用高效液相色谱梯度洗脱法,以YWGCH为色谱柱,乙腈为流动相,荧光法测定了水体中苯并[a]芘的含量.结果表明,苯并[a]芘在1.0×10-16~5.0×10-12 g/mL的浓度范围内与色谱峰面积呈现良好的线性关系,对于浓度为3.0×10-13 g/mL的苯并[a]芘6次平行测定的相对标准偏差为1.9%.利用此法测定了自来水及景观用水等水体中苯并[a]芘的含量,回收率在97%~108%之间.
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