کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1163817 1490959 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Polydimethylsiloxane composites containing 1,2-naphtoquinone 4-sulphonate as unique dispositive for estimation of casein in effluents from dairy industries
ترجمه فارسی عنوان
پلی اتیل سیلکسان کامپوزیت حاوی 1،2-نفتو کوینون 4-سولفونات به عنوان منحصر به فرد برای تعیین کازئین در پساب صنایع لبنی
کلمات کلیدی
پلیدیمیلسی سیلکسان کامپوزیت، گرفتگی واکنش دهنده، تجزیه و تحلیل در محل، تعیین کازئین
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Embedding the reagent into hybrid composites PDMS-TEOS-SiO.
• Dispositive of small size, good stability and high compatibility.
• The dispositive allows a semiquantitative assessment.
• A suitable method to control excess of protein pollution in effluents from dairy industries.
• Accurate quantitative results could be easily achieved.

A unique dispositive to determine casein which is the most abundant protein in dairy sewages has been proposed. In this sensing technology, the derivatization reagent 1,2-naphtoquininone 4-sulphonate (NQS) is embedded into a polydimethylsiloxane-tetraethylortosilicate-SiO2 nanoparticles composite (PDMS-TEOS-SiO2NPs). When the composite is immersed into the samples, casein is extracted from the solution and derivatized inside the PDMS matrix after 10 min at 100 °C. The sensing support changes its color from yellow to orange depending on the casein concentration. Quantitative analysis can be carried out by measuring the absorbance with a reflection probe or by image-processing tool (GIMP). This sensor provides good sensitivity and precision (RSD% <12%). The method validation has been done by applying the biocinchoninic acid method (BCA). Moreover, semiquatitative analysis of casein can be performed by visual observation. Taking into account the advantages of small size, rapidity, simplicity, good stability and high compatibility in aqueous solution, this sensor is expected to have potential practical applications for in-situ determination of casein. Finally the method has been applied to analyze effluents from dairy industries.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 873, 11 May 2015, Pages 31–37
نویسندگان
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