AN investigation into the mode of occurrence of nitrogen in coals necessitated devising a suitable method for its determination. The ordinary macro-Kjeldahl method was much improved in speed and ...

You are free to share (copy and redistribute) this article in any medium or format and to adapt (remix, transform, and build upon) the material for any purpose, even commercially within the parameters ...

This guideline technical document outlines the evaluation of the available information on arsenic with the intent of updating the guideline value for arsenic in drinking water. The purpose of this ...

PFBA and ammonium 3-oxa-perfluorohexanoate, GenX. These authors also mentioned that the presence of fluorine and amine counterparts in the derivatives may improve both the PFAS uptake and selectivity.

Analysis of environmental parameters, including temperature, pH, conductivity, concentrations of biodegradable organic (e.g., AOC and BDOC) and inorganic nutrients (e.g., phosphate, sulfur, and ...

Zhao utilized a solution of ammonium persulfate and silver nitrate in cerium oxidation in nitric medium [9]. El-Nadi et al. used sodium bromate solution in nitric acid medium, to maintain the cerium ...

Soil sucrase, catalase, urease, and acid phosphatase activities were assessed using different methods: 3,5-dinitrosalicylic acid colorimetry for sucrase, potassium permanganate titration for catalase, ...

The following outline can be used to segregate laboratory chemicals. Chemical groups should be kept separate from each other.

"reason": "Emission at 524 nm (green)", ...