高效液相色谱法检测生物样品中五氯酚

目的　建立生物检材中五氯酚的高效液相色谱检测方法。方法　将鱼内脏组织匀浆 ,用有机溶剂萃取后 ,采用高效液相色谱仪检测。对高效液相色谱条件进行反复筛选 ,同时以空白添加实验考察回收率、线性范围、检测限。结果　建立了以乙醚为提取溶剂处理样品 ,采用 Hypersil ODS柱 (4 .6 m m i.d.× 15 0 m m,5μm) ,甲醇∶2 g/ L醋酸铵水溶液 (80∶ 2 0 )为流动相的高效液相色谱分析方法。30 5 nm进行检测 ,同时收集全光谱信息。按上述方法分析生物检材中的五氯酚 ,方法平均回收率为 76 % ,检测线性范围为 0 .0 4 2μg/ g～ 1.344μg/ g,相关性良好 (r=0 .9994 ) ,检测限为 0 .0 14μg/ g。运用该方法成功地从中毒鱼体中检出五氯酚。结论　所建立方法能便捷、准确地检测生物检材中五氯酚 ,为法医学中毒鉴定提供了新方法。

Detection of Pentachlorophenol in Biomaterial Using HPLC

OBJECTIVE: To develop a method of detecting pentachlorophenol in biomaterial. METHODS: The samples were extracted by ether, and the characters of the high performance liquid chromatography (HPLC) method were studied. RESULTS: A method for the detection of pentachlorophenol in fish tissue samples was set up with the conditions of chromatography as follows: the compounds are separated on Hypersil ODS column(4.6 mm i.d. x 150 mm, 5 microns) and eluted with methanol which contains 2 g/L NH4Ac (20:80) using 305 nm as the detecting wavelength, the recovery of method being 76%, the linear range 0.042 microgram/g-1.344 micrograms/g, and the correlation coefficient 0.9994, the limit of quantification 0.014 microgram/g. Finally, pentachlorophenol was successfully detected in the fish tissue samples. CONCLUSION: The method has been proven useful in the forensic cases involved in the poisoning of pentachlorophenol.