کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7584852 | 1492031 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid determination of cadmium in rice using an all-solid RGO-enhanced light addressable potentiometric sensor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Herein, an all-solid light addressable potentiometric sensor (LAPS) is presented for determination of cadmium (Cd) in rice. On the working surface of the LAPS, reduced graphene oxide (RGO) is introduced as a part of ion-to-electron transducer to improve ionophore behaviors. The composite modification of RGO and ionophore is validated with scanning electron microscopy. The as-fabricated sensor presents a rapid response in less than 10â¯s to target Cd. Meanwhile, it shows lower noise (0.23â¯mV) and better limit of detection (0.002â¯mgâ¯Lâ1) than LAPS (control) without RGO modification (0.37â¯mV; 0.008â¯mgâ¯Lâ1). With the proposed method, satisfactory precision, accuracy and selectivity are also established. This method is adopted in an extensive survey for 25 rice samples from 5 regions in China. The results are in very good agreement with those obtained using inductively-coupled plasma-mass spectrometry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 261, 30 September 2018, Pages 1-7
Journal: Food Chemistry - Volume 261, 30 September 2018, Pages 1-7
نویسندگان
Wen Zhang, Yiwei Xu, Xiaobo Zou,