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Author:

周正 (周正.) (Scholars:周正) | 康天放 (康天放.) (Scholars:康天放) | 鲁理平 (鲁理平.) (Scholars:鲁理平)

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CQVIP PKU CSCD

Abstract:

采用一步水热法合成了水溶性N-乙酰-L-半胱氨酸修饰的碲化镉量子点(NACCdTe),基于甲醛对该量子点的荧光猝灭作用,建立了测定甲醛的荧光光谱法。在7.5×10~(-8) mol·L~(-1) NAC-CdTe-0.01mol·L~(-1) Tris-HCl(pH 6.0)体系中加入不同质量浓度的甲醛溶液,反应10min后,以400nm为激发波长,于567nm处测量体系的荧光强度(I)。甲醛的质量浓度在5.0×10~(-6)~1.0×10~(-1) g·L~(-1)内与I_0/I(I_0为不加甲醛时体系的荧光强度)值呈线性关系,检出限(3s/k)为1.3×10~(-6)g·L~(-1)。方法...

Keyword:

荧光猝灭法 量子点 碲化镉 甲醛

Author Community:

  • [ 1 ] 北京工业大学环境与能源工程学院区域大气复合污染防治北京市重点试验室

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Source :

理化检验(化学分册)

Year: 2017

Issue: 09

Volume: 53

Page: 1025-1030

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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