摘要
以PAN-S[1-（2-吡啶偶氮）-2-萘酚-6-磺酸]为显色剂,在pH值为8.5的氨缓冲溶液的条件下,用分光光度计测定人发中的锌。其配合物的最大吸收波长为530nm,表观摩尔吸光系数为1.14×104L/（mol.cm）,锌含量在0~21μg/（25 mL）范围内符合朗伯-比尔定律。测定结果的相对标准偏差为0.86%~1.3%,加标回收率为97.0%~99.7%。
In a borate buffer mediun of pH 8.5,zinc in hair was detemined by spectrometry with the reagent 1-（2-pyridylazo）-2-naphthol-6-sulphonic acid.The maximum absorbance was at 530 nm with apparent molar absorption of 1.14×104L/（mol·cm）.The Beer′s law was obeyed in the range of 0 to 21 μg/（25 mL）.The RSD was 0.86% to 1.3%,and recoveries were 97.0% to 99.7%.
出处
《化学世界》
CAS
CSCD
北大核心
2011年第9期519-522,共4页
Chemical World
基金
国家自然基金资助项目(21077087)
关键词
锌
PAN-S
分光光度法
人发样
ZN
zinc
1-（2-pyridylazo）-2-naphthol-6-sulphonic acid
spectrometry
human hairs
