کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5142423 | 1496025 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Highly selective and sensitive determination of copper ion by two novel optical sensors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
New optical sensors for the determination of copper ion by incorporation of 1,1â²-(4-nitro-1,2-phenylene)bis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-lidene)dinaphthalen-2-ol(L1), 1,1â²-2,2â²-(1,2-phenylene)bis(ethene-2,1-diyl)dinaphthalen-2-ol 1(L2), dibutylphthalate (DBP) and sodium tetraphenylborate (Na-TPB) to the plasticized polyvinyl chloride matrices were prepared. The tendency of both ionophores (L2 and L1) as chromoionophore was significantly enhanced by the addition of DBP to the membrane. The proposed sensors benefit from advantages such as high stability, reproducibility and relatively long lifetime, good selectivity for Cu2+ ion determination over a large number of alkali, alkaline earth, transition and heavy metal ions. At optimum values of membrane compositions and experimental conditions, both sensors' response was linear over a concentration range of 7.98 Ã 10â6 to 1.31 Ã 10â4mol Lâ1 and 1.99 Ã 10â6 to 5.12 Ã 10â5 mol Lâ1 for L2 and L1, respectively. Sensor detection limit based on the definition that the concentration of the sample leads to a signal equal to the blank signal plus three times of its standard deviation was found to be 3.99 Ã 10â7 and 5.88 Ã 10â7 mol Lâ1 for L2 and L1, respectively. The response time of the optodes (defined as the time required reaching the 90% of the peak signal) was found to be 5-8 min for L2 and 20-25 min for L1 based sensor. The proposed optical sensors were applied successfully for the determination of Cu2+ ion content in water samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 10, Supplement 2, May 2017, Pages S2319-S2326
Journal: Arabian Journal of Chemistry - Volume 10, Supplement 2, May 2017, Pages S2319-S2326
نویسندگان
Mehrorang Ghaedi, Javad Tashkhourian, Morteza Montazerozohori, Mahdi Nejati Biyareh, Batool Sadeghian,