Ultra Trace Mercury Analysis by Dry Thermal Decomposition in Alumina Porcelain Tube

Ohkawa, T.

doi:10.1248/jhs1956.23.13

Cited by 10 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MT levels were expressed as the amount of mercury bound to thionein molecules after Hg analysis of the Hg-MT samples. Hg levels in the final preparations were determined by the oxygen combustion-gold amalgamation method [23] using an atomic absorption mercury detector MD-A (Nippon Instruments Co., Ltd., Osaka, Japan).…”

Section: Methodsmentioning

confidence: 99%

Elevation of Glucose 6-Phosphate Dehydrogenase Activity Induced by Amplified Insulin Response in Low Glutathione Levels in Rat Liver

Taniguchi

Mori

Iramina

et al. 2016

The Scientific World Journal

View full text Add to dashboard Cite

Weanling male Wistar rats were fed on a 10% soybean protein isolate (SPI) diet for 3 weeks with or without supplementing 0.3% sulfur-containing amino acids (SAA; methionine or cystine) to examine relationship between glutathione (GSH) levels and activities of NADPH-producing enzymes, glucose 6-phosphate dehydrogenase (G6PD) and malic enzyme (ME), in the liver. Of rats on the 10% SPI diet, GSH levels were lower and the enzyme activities were higher than of those fed on an SAA-supplemented diet. Despite the lower GSH level, γ-glutamylcysteine synthetase (γ-GCS) activity was higher in the 10% SPI group than other groups. Examination of mRNAs of G6PD and ME suggested that the GSH-suppressing effect on enzyme induction occurred prior to and/or at transcriptional levels. Gel electrophoresis of G6PD indicated that low GSH status caused a decrease in reduced form and an increase in oxidized form of the enzyme, suggesting an accelerated turnover rate of the enzyme. In primary cultured hepatocytes, insulin response to induce G6PD activity was augmented in low GSH levels manipulated in the presence of buthionine sulfoximine. These findings indicated that elevation of the G6PD activity in low GSH levels was caused by amplified insulin response for expression of the enzyme and accelerated turnover rate of the enzyme molecule.

show abstract

Section: Methodsmentioning

confidence: 99%

Elevation of Glucose 6-Phosphate Dehydrogenase Activity Induced by Amplified Insulin Response in Low Glutathione Levels in Rat Liver

Taniguchi

Mori

Iramina

et al. 2016

The Scientific World Journal

View full text Add to dashboard Cite

show abstract

“…The sensitivity of TDA AAS has improved by one order of magnitude since the 1970s and provides a lower LOD than the CV AAS method, owing to the former method determining Hg concentration by gold amalgamation and not requiring a reagent blank. 21,22 Although TDA AAS has a principal drawback in that a relatively lower maximum sample amount leads to complete combustion, thus limiting the sample mass to 100 mg, the sample amount of scraped silica gel is usually below the maximum amount. Thus, a modern TLC separation technique combined with the excellent detectability of modern AAS should provide an enhanced approach for MeHg analysis.…”

Section: Introductionmentioning

confidence: 99%

Simple and sensitive method for the determination of methylmercury in hair using thin-layer chromatography with thermal decomposition gold amalgamation atomic absorption spectrophotometry

Haraguchi

Akagi²,

Matsuyama

2022

ANAL. SCI.

View full text Add to dashboard Cite

An improved method is described for the determination of methylmercury (MeHg) in human hair that is based on thin-layer chromatography and thermal decomposition gold amalgamation atomic absorption spectrophotometry. The dithizone extraction and application procedure of this technique were optimized, thus improving its sensitivity and robustness and enabling the use of less-toxic solvents than other approaches. The limit of detection was 0.18 ng MeHg (as Hg), corresponding to 0.018 mg MeHg kg -1 of hair relative to a 10 mg sample. This method is appropriate for detecting MeHg in hair at the approximate reference dose level established by the United States Environmental Protection Agency.

show abstract

Deleterious effects in mice of fish-associated methylmercury contained in a diet mimicking the Western populations' average fish consumption

Bourdineaud

Fujimura

Laclau

et al. 2011

Environment International

View full text Add to dashboard Cite

Ultra Trace Mercury Analysis by Dry Thermal Decomposition in Alumina Porcelain Tube

Cited by 10 publications

References 0 publications

Elevation of Glucose 6-Phosphate Dehydrogenase Activity Induced by Amplified Insulin Response in Low Glutathione Levels in Rat Liver

Elevation of Glucose 6-Phosphate Dehydrogenase Activity Induced by Amplified Insulin Response in Low Glutathione Levels in Rat Liver

Simple and sensitive method for the determination of methylmercury in hair using thin-layer chromatography with thermal decomposition gold amalgamation atomic absorption spectrophotometry

Deleterious effects in mice of fish-associated methylmercury contained in a diet mimicking the Western populations' average fish consumption

Contact Info

Product

Resources

About