Guanidine determinations on some invertebrates by a colorimetric phosphotungstic acid method
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چکیده
منابع مشابه
Colorimetric method for hippuric acid.
FTIPPURIC ACID 1S an important metabolic product normally present in urine in amounts determined by tile ingestion of benzyl-containing foods and medicinals (ii). Because this compound is comparatively inert chemically, identification requires isolation and the determination of physical constants after extensive purification. There has long been need for a reliable and sensitive color reaction ...
متن کاملSome Applications of the Colorimetric Phosphate Method
Two years ago, a modification (1) of the Bell-Doisy phosphate method was published and at that time technique ‘was given for its application to inorganic phosphorus in blood and urine. Since then its use has been extended to a variety of analytical procedures, some of which are given below. In principle the method consists of the formation of phosphomolybdic acid and its subsequent reduction by...
متن کاملSome Applications of the Colorimetric Phosphate Method
Two years ago, a modification (1) of the Bell-Doisy phosphate method was published and at that time technique ‘was given for its application to inorganic phosphorus in blood and urine. Since then its use has been extended to a variety of analytical procedures, some of which are given below. In principle the method consists of the formation of phosphomolybdic acid and its subsequent reduction by...
متن کاملInterference of the chemotherapeutic agent etoposide with the direct phosphotungstic acid method for uric acid.
A 62-year-old woman receiving chemotherapy with etoposide showed discrepant uric acid values as measured by a direct phosphotungstic acid (PTA) method (150 mg/L) compared with a uricase technique (40 mg/L). After ultrafiltration, the positive interference for the direct PTA method was retained in the protein fraction, but not in the filtrate. Adding exogenous etoposide to drug-free serum confir...
متن کاملAmino Acid Determinations on Crystalline Bovine and Human Serum Albumin by the Isotope Dilution Method*
In this paper there is reported the determination, by the isotope dilution method (l), of glutamic acid, aspartic acid, tyrosine, and glycine in both bovine and human serum albumin, and of lysine in bovine serum albumin. A summary of the analytical results is given in Table I and the data for the individual experiments are given in Tables II and III. The isotope dilution technique was also appl...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1928
ISSN: 0306-3283
DOI: 10.1042/bj0220353