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2,3,7-三羟基-9-(2-羟基)萘基荧光酮光度法测定环境样品中微量铬(Ⅵ)
Alternative TitleSpectrophotometric Determination of Chromium(Ⅵ) in Environmental Sample with 2,3,7-Trihydroxy-9-(2-hydroxy)naphthyl Fluorone
方艳芬1,2; 黄应平3; 易晓明3; 罗光富3; 程根伟1
2010
Source Publication分析科学学报
ISSN1006-6144
Volume26Issue:3Pages:661-664
SubtypeArticle
Contribution Rank1
Abstract研究了在阳离子表面活性剂溴化十六烷基三甲胺(CTMAB)存在下,有机显色试剂2,3,7-三羟基-9-(2-羟基)萘基荧光酮(2-HNF)与Cr(Ⅵ)的显色反应和光度性质.结果表明,在pH=7.30的Na2HPO4-KH2PO4缓冲介质中,30min内可反应完全,2-HNF与Cr(Ⅵ)形成摩尔比为2∶1的紫红色络合物,络合物至少能稳定存在12h,其最大吸收波长位于570nm处,表观摩尔吸光系数为1.07*105L·mol-1·cm-1,Cr(Ⅵ)含量在0~1.40mug/5mL范围内符合比耳定律.该分析方法已用于环境样品中微量铬的测定,结果满意
Other AbstractIn the presence of cationic surfactant cetyltrimethylammonium bromide(CTMAB),the color reaction and photophysical property of 2,3,7-trihydroxy-9-(2-hydroxy)naphthyl fluorone(2-HNF) with chromium(Ⅵ)have been studied.A complex with a chromium(Ⅵ)-to-2-HNF molar ratio of 1∶2is formed in buffer solution(pH=7.30of Na2HPO4-KH2PO4)within 30min.This red complexes is stable for at least 12hours.The maximum absorption wavelength is at 570nm and the apparent molar absorptivity of the complex is 1.07*105 L·mol-1·cm-1.In the range of 0~1.40mug/5mL,Beer's law is obeyed.The proposed method has been applied to the determination of the trace chromium in environmental sample with satisfactory results
Keyword分光光度法 2,3,7-三羟基-9-(2-羟基)萘基荧光酮 铬(Ⅵ)
Indexed ByCSCD
Language中文
CSCD IDCSCD:4085544
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25608
Collection山地表生过程与生态调控重点实验室
Corresponding Author程根伟
Affiliation1.中国科学院成都山地灾害与环境研究所;
2.中国科学院研究生院;
3.三峡库区生态环境教育部工程研究中心
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
方艳芬,黄应平,易晓明,等. 2,3,7-三羟基-9-(2-羟基)萘基荧光酮光度法测定环境样品中微量铬(Ⅵ)[J]. 分析科学学报,2010,26(3):661-664.
APA 方艳芬,黄应平,易晓明,罗光富,&程根伟.(2010).2,3,7-三羟基-9-(2-羟基)萘基荧光酮光度法测定环境样品中微量铬(Ⅵ).分析科学学报,26(3),661-664.
MLA 方艳芬,et al."2,3,7-三羟基-9-(2-羟基)萘基荧光酮光度法测定环境样品中微量铬(Ⅵ)".分析科学学报 26.3(2010):661-664.
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