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Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS
Mercury species have aroused wide concern in the past several decades due to their high toxicity. However, it is still difficult to detect ultra-trace mercury species due to their biochemical transformation in complex samples. To establish a simpler and more sensitive method for pre-concentration an...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080583/ https://www.ncbi.nlm.nih.gov/pubmed/35541115 http://dx.doi.org/10.1039/c8ra01891j |
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author | Gao, Xingsu Dai, Jiayong Zhao, Hongyan Zhu, Jun Luo, Lan Zhang, Rui Zhang, Zhan Li, Lei |
author_facet | Gao, Xingsu Dai, Jiayong Zhao, Hongyan Zhu, Jun Luo, Lan Zhang, Rui Zhang, Zhan Li, Lei |
author_sort | Gao, Xingsu |
collection | PubMed |
description | Mercury species have aroused wide concern in the past several decades due to their high toxicity. However, it is still difficult to detect ultra-trace mercury species due to their biochemical transformation in complex samples. To establish a simpler and more sensitive method for pre-concentration and determination of trace mercury species, molybdenum disulfide (MoS(2)) nanosheets with sulfur-rich characteristics and enlarged interlayer spacing were prepared by a hydrothermal method coupled with a sonication-assisted liquid exfoliation method and acted as solid-phase extraction adsorbent. The nano-MoS(2) had high adsorption capacity, fast adsorption rate and excellent selectivity towards mercury ions (Hg(2+)), methyl mercury (MeHg(+)) and ethyl mercury (EtHg(+)) in a wide pH range and complex matrices. And it could be easily regenerated by 4 mol L(−1) HCl and reused several times. After optimizing HPLC-UV-HG-AFS conditions, a great linearity (1.0–10.0 μg L(−1), R(2) = 0.999 for Hg(2+), MeHg(+) and EtHg(+)), lower detection limits (0.017, 0.037 and 0.021 ng mL(−1) for Hg(2+), MeHg(+) and EtHg(+), respectively), relative standard deviations (<5%) and addition recoveries of the samples within 82.75–113.38% were observed. In summary, trace inorganic and organic mercury species in environmental and biological samples could be selectively enriched by the prepared nano-MoS(2) and efficiently seperated and detected by HPLC-UV-HG-AFS. The present study will help provide a better strategy for environmental monitoring and health assessment of mercury pollutants. |
format | Online Article Text |
id | pubmed-9080583 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90805832022-05-09 Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS Gao, Xingsu Dai, Jiayong Zhao, Hongyan Zhu, Jun Luo, Lan Zhang, Rui Zhang, Zhan Li, Lei RSC Adv Chemistry Mercury species have aroused wide concern in the past several decades due to their high toxicity. However, it is still difficult to detect ultra-trace mercury species due to their biochemical transformation in complex samples. To establish a simpler and more sensitive method for pre-concentration and determination of trace mercury species, molybdenum disulfide (MoS(2)) nanosheets with sulfur-rich characteristics and enlarged interlayer spacing were prepared by a hydrothermal method coupled with a sonication-assisted liquid exfoliation method and acted as solid-phase extraction adsorbent. The nano-MoS(2) had high adsorption capacity, fast adsorption rate and excellent selectivity towards mercury ions (Hg(2+)), methyl mercury (MeHg(+)) and ethyl mercury (EtHg(+)) in a wide pH range and complex matrices. And it could be easily regenerated by 4 mol L(−1) HCl and reused several times. After optimizing HPLC-UV-HG-AFS conditions, a great linearity (1.0–10.0 μg L(−1), R(2) = 0.999 for Hg(2+), MeHg(+) and EtHg(+)), lower detection limits (0.017, 0.037 and 0.021 ng mL(−1) for Hg(2+), MeHg(+) and EtHg(+), respectively), relative standard deviations (<5%) and addition recoveries of the samples within 82.75–113.38% were observed. In summary, trace inorganic and organic mercury species in environmental and biological samples could be selectively enriched by the prepared nano-MoS(2) and efficiently seperated and detected by HPLC-UV-HG-AFS. The present study will help provide a better strategy for environmental monitoring and health assessment of mercury pollutants. The Royal Society of Chemistry 2018-05-18 /pmc/articles/PMC9080583/ /pubmed/35541115 http://dx.doi.org/10.1039/c8ra01891j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Gao, Xingsu Dai, Jiayong Zhao, Hongyan Zhu, Jun Luo, Lan Zhang, Rui Zhang, Zhan Li, Lei Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title | Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title_full | Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title_fullStr | Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title_full_unstemmed | Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title_short | Synthesis of MoS(2) nanosheets for mercury speciation analysis by HPLC-UV-HG-AFS |
title_sort | synthesis of mos(2) nanosheets for mercury speciation analysis by hplc-uv-hg-afs |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080583/ https://www.ncbi.nlm.nih.gov/pubmed/35541115 http://dx.doi.org/10.1039/c8ra01891j |
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