Determination of Nitrate in Milk and Cheese by Cadmium Reduction
نویسندگان
چکیده
منابع مشابه
Determination of Lead and Cadmium in cow’s Milk and Elimination by Using Titanium Dioxide Nanoparticles
Background and Objectives: Heavy metals such as cadmium and lead are the most important toxins spreading through various ways like water, soil, and air in nature and easily enter human food chain. It is essential to determine the cumulative and harmful effects of these metals in nutrients, especially in cow milk because it is a unique source of food for all ages and it contains both essential a...
متن کاملDetermination of inorganic nitrate in serum and urine by a kinetic cadmium-reduction method.
Nitrate in serum and urine was assayed by a modification of the cadmium-reduction method; the nitrite produced was determined by diazotization of sulfanilamide and coupling to naphthylethylene diamine. After samples were deproteinized with Somogyi reagent, the nitrate was reduced by Cu-coated Cd in glycine buffer at pH 9.7 (2.5 to 3 g of Cd granules for a 4-mL reaction mixture). The reduction f...
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A sequential injection system for the determination of nitrate (NO3 ) in vegetables was developed to automate this determination, allowing for substantially reduced reagent consumption and generated waste using low-cost equipment. After extraction with water and filtration, the extracted nitrate is reduced inline to nitrite in a copperized cadmium (Cd) column and determined as nitrite. Accordin...
متن کاملDetermination of Nitrate in Sea Water by Cadmium-copper Reduction to Nitrite*
An accurate, dependable determination of 0-60 ,ug-at./l. of NOs -N in sea water has been developed. The sample is treated with tetrasodium ethylenediaminetetraacetate solution and passed through a column of copperized cadmium filings. A nearly quantitative reduction of nitrate to nitrite results. Nitrite is then determined by a diazotization method. Neither sulphide nor high nitrite concentrati...
متن کاملDetermination of nitrate by suppressed ion chromatography after copperised-cadmium column reduction.
The nitrate-selective copperised-cadmium (Cu-Cd) reduction reaction coupled directly to the highly sensitive nitrite ion chromatographic detection, produced a more precise method for determination of nitrate than any one of the two conventional methods. A borate buffer solution used in the reduction reaction, in place of the conventional ammonium-EDTA buffer solution, eliminated interferences f...
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ژورنال
عنوان ژورنال: Journal of the Japan Veterinary Medical Association
سال: 1975
ISSN: 0446-6454,2186-0211
DOI: 10.12935/jvma1951.28.521