عنوان	Catalytic–kinetic determination of trace amount of formaldehyde by the spectrophotometric method with a bromate–Janus green system
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Janus green; Formaldehyde; Spectrophotometeric; Bromate
چکیده	A new simple and rapid catalytic kinetic method for the determination of trace amount of formaldehyde is described. The method is based on the catalytic effect of formaldehyde on the oxidation of Janus green by bromate in the present of sulfuric acid. The reaction monitored spectrophotometrically by measuring the decrease in absorbance of the reaction mixture at 618 nm. The fixed-time method was used for the first 150 s. For initiation of the reaction, under the optimum conditions, in the concentration range of 0.003–2.5 gml−1 formaldehyde can be determined with a limit of detection 0.0015 gml−1. The relative standard deviation of five replicate measurements is 2.3% for 1.0 gml−1 of formaldehyde. The method was used for the determination of formaldehyde in real samples with satisfactory results.
پژوهشگران	شهریار عباسی (نفر اول)، محمد اسفندیارپور (نفر دوم)، محمدعلی طاهر (نفر سوم)، علی دانش فر (نفر چهارم)