کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7586015 1492043 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A biodegradable colorimetric film for rapid low-cost field determination of formaldehyde contamination by digital image colorimetry
ترجمه فارسی عنوان
یک فیلم رنگی زیستی قابل تجزیه برای تعیین سریع هزینه کم هزینه آلودگی فرمالدئید توسط کالیمتری تصویر دیجیتال
کلمات کلیدی
فیلم زیست تخریب پذیر، سنسور رنگی، فرمالدئید، رنگ سنجی دیجیتال،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A biodegradable colorimetric film was fabricated on the lid of portable tube for in-tube formaldehyde detection. Based on the entrapment of colorimetric reagents within a thin film of tapioca starch, the yellow reaction product was observed with formaldehyde. Intensity of the blue channel from the digital image of yellow product showed a linear relationship in the range of 0-25 mg L−1 with low detection limit of 0.7 ± 0.1 mg L−1. Inter-day precision of 0.61-3.10%RSD were obtained with less than 4.2% relative error from control samples. The developed method was applied for various food samples in Phuket and formaldehyde concentration range was non-detectable to 1.413 mg kg−1. The quantified concentrations of formaldehyde in fish and squid samples provided relative errors of −7.7% and +10.8% compared to spectrophotometry. This low cost sensor (∼0.04 USD/test) with digital image colorimetry was thus an effective alternative for formaldehyde detection in food sample.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 249, 30 May 2018, Pages 154-161
نویسندگان
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