摘要
采用吹扫捕集-气相色谱法分析水样中的五氯酚(PCP)方便、省时,而且避免了有机溶剂的大量使用。实验确定了PCP适宜的吹扫捕集条件:吸附剂为TenaxGC,采用高纯氮气作为吹扫气体,吹扫流量为40mL/min,吹扫时间为30min。配制PCP标准水样系列作标准曲线,线性回归方程为y=109.65x-687.72,线性相关系数r=0.9949。配制0.5×10^(-3)mg/L的标准水样进行精密度测定、测得标准偏差为3％。该法对PCP检出极限为0.2×10^(-3)mg/L。
It is convenient and time-saving to analysis pentachlorophenol (PCP) in water by purge and trap concentrator coupled to gas chromatography
that avoids employing a great deal organic solvent. In this paper, the appropriate purge and trap conditions for PCP are determined. The
trap sorbent is TenaxGC, the purge gas is pure nitrogen and purge flow is 40mL/min, the purge time is 30 min. A series of standard PCP
water samples 5, 10, 50, 100, 200, 400, 800, 1000 (×10^(-3) mg/L) are analyzed in order to obtain standard curve, and the linear
regressivecequation obtained is y=109.65x-687.72, the correlation coefficient r is 0.9949. The precision of the method is determined with
0.5×10^(-3) mg/L PCP water sample, and the standard deviation measured is 3%. The detection limit for PCP is 0.2×10^(-3) mg/L by using
thismethod.
出处
《中国造纸》
CAS
北大核心
2004年第6期22-24,共3页
China Pulp & Paper
基金
广东省自然科学基金(31430)
华南理工大学制浆造纸工程国家重点实验室开放基金(200335)
中国科学院纤维素化学开放研究实验室访问学者基金
关键词
吹扫捕集
气相色谱
五氯酚
purge and trap concentrator
gas chromatography
pentachlorophenol
