کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7145795 1462071 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Colorimetric detection of chromium(III) using O-phospho-l-serine dithiocarbamic acid functionalized gold nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Colorimetric detection of chromium(III) using O-phospho-l-serine dithiocarbamic acid functionalized gold nanoparticles
چکیده انگلیسی
A sensitive and selective colorimetric Cr3+ detection method was developed by using O-phospho-l-serine dithiocarbamic acid (PSDTC) functionalized gold nanoparticles (PSDTC-AuNPs). The presence of Cr3+ immediately induced aggregation of PSDTC-AuNPs, yielding a color change from red to blue. This Cr3+-induced aggregation of PSDTC-AuNPs was monitored by bare eye and UV-vis spectroscopy. The SPR absorbance (651 nm) of the reaction between PSDTC-AuNPs and Cr3+ shows a good linearity in the Cr3+ concentration with a low detection limit 4.2 nM (S/N = 3). PSDTC-AuNPs showed excellent selectivity toward Cr3+ compared to other metal ions Ag+, Al3+, Ca2+, Cd2+, Co2+, Cu2+, Fe2+, Fe3+, Hg2+, Mg2+, Mn2+, Ni2+, Pb2+, and Zn2+. Optimal detection of Cr3+ was achieved over a pH range from 5 to 10. In addition, PSDTC-AuNPs were applied to detect Cr3+ in lake water, showing low interference.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 220, 1 December 2015, Pages 772-778
نویسندگان
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