A microfluidic paper-based analytical device for rapid quantification of particulate chromium.
A microfluidic paper-based analytical device for rapid quantification of particulate chromium.
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DOI:
10.1016/j.aca.2013.09.008
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发表时间:
2013-10-24
影响因子:
6.2
通讯作者:
Henry CS
中科院分区:
文献类型:
--
作者:
Rattanarat P;Dungchai W;Cate DM;Siangproh W;Volckens J;Chailapakul O;Henry CS
Occupational exposure to Cr is concerning because of its myriad of health effects. Assessing chromium exposure is also cost and resource intensive because the analysis typically uses sophisticated instrumental techniques like Inductively-Coupled Plasma-Mass Spectrometry (ICP-MS). Here, we report a novel, simple, inexpensive microfluidic paper-based analytical device (µPAD) for measuring total Cr in airborne particulate matter. In the µPAD, tetravalent cerium (Ce(IV)) was used in a pretreatment zone to oxidize all soluble Cr to Cr(VI). After elution to the detection zone, Cr(VI) reacts with 1,5-diphenylcarbazide (1,5- DPC) forming 1,5-diphenylcarbazone (DPCO) and Cr(III). The resulting Cr(III) forms a distinct purple colored complex with the DPCO. As proof-of-principle, particulate matter (PM) collected on a sample filter was analyzed with the µPAD to quantify the mass of total Cr. A log-linear working range (0.23–3.75 µg; r2=0.998) between Cr and color intensity was obtained with a detection limit of 0.12 µg. For validation, a certified reference containing multiple competing metals was analyzed. Quantitative agreement was obtained between known Cr levels in the sample and the Cr measured using the µPAD.
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影响因子:
7.4
作者:
Hossain, S. M. Zakir;Brennan, John D.
通讯作者:
Brennan, John D.
影响因子:
6.2
作者:
Dungchai, Wijitar;Chailapakul, Orawon;Henry, Charles S.
通讯作者:
Henry, Charles S.
影响因子:
14
作者:
Ge, Lei;Yan, Jixian;Yu, Jinghua
通讯作者:
Yu, Jinghua
影响因子:
7.4
作者:
Hossain, S. M. Zakir;Luckham, Roger E.;Brennan, John D.
通讯作者:
Brennan, John D.
影响因子:
6.1
作者:
Abdolmohammad-Zadeh, H.;Sadeghi, G. H.
通讯作者:
Sadeghi, G. H.