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Determination of Lead Ion Based on Quenching of Room Temperature Phosphorescence of Mn-doped ZnS Quantum Dots
Alternative TitleDetermination of Lead Ion Based on Quenching of Room Temperature Phosphorescence of Mn-doped ZnS Quantum Dots
Chen Juan1; Sun JieFang1; Guo Lei1; Xie JianWei1; Sun GuoXiang2
2012
Source PublicationCHINESE JOURNAL OF ANALYTICAL CHEMISTRY
ISSN0253-3820
Volume40Issue:11Pages:1680-1685
AbstractRoom temperature phosphorescence (RTP) property of Mn-doped ZnS quantum dots (QDs) was explored to develop a novel method for selective detection of lead cation. The influence factors such as buffer kinds and their concentration, the concentration of Mn-doped ZnS QDs solution, reaction time and coexisting substances were studied. It was found that under optimized conditions, i.e. 10 mmol/L Tris-HCl buffer at pH 7.4 and 2 min reaction time, the relative RTP intensity of the Mn-doped ZnS QDs was quenched linearly by lead cation in the concentration range from 0.25 to 1000 mu mol/L, and the limit of detection was 0.04 mu mol/L (8.3 mu g Pb/L). This method was also applied to measure lead cation in biosamples using a high-throughput 96 well plate with a wide linear range, simpleness, rapidness, high sensitivity and selectivity, and cost effectiveness. The RTP was quenched linearly by lead cation in human plasma in the concentration range from 5 to 1000 mu mol/L, and the limit of detection was 0. 48 mu mol/L (Pb 99 mu g/L), respectively.
KeywordHYDRIDE GENERATION BIOLOGICAL-FLUIDS SPECTROMETRY SYSTEM ACID Quantum dots Manganese-doped zinc sulfide Phosphorescence Lead cation
Indexed ByCSCD
Language英语
CSCD IDCSCD:4675836
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/155807
Collection中国科学院金属研究所
Affiliation1.Beijing Institute Pharmacol & Toxicol, Beijing 100850, Peoples R China
2.中国科学院金属研究所
Recommended Citation
GB/T 7714
Chen Juan,Sun JieFang,Guo Lei,et al. Determination of Lead Ion Based on Quenching of Room Temperature Phosphorescence of Mn-doped ZnS Quantum Dots[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2012,40(11):1680-1685.
APA Chen Juan,Sun JieFang,Guo Lei,Xie JianWei,&Sun GuoXiang.(2012).Determination of Lead Ion Based on Quenching of Room Temperature Phosphorescence of Mn-doped ZnS Quantum Dots.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,40(11),1680-1685.
MLA Chen Juan,et al."Determination of Lead Ion Based on Quenching of Room Temperature Phosphorescence of Mn-doped ZnS Quantum Dots".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 40.11(2012):1680-1685.
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