نتایج جستجو برای: acidic extraction
تعداد نتایج: 198963 فیلتر نتایج به سال:
effect of ph,
An innovative bio method was investigated to extract harmful iron and sulfur species from waterlogged wood samples. The compared with a chemical treatment. Both approaches were applied on lacustrine marine samples, different genera, evaluate the versatility of proposed method. Non-invasive non-destructive methods carried out investigate both bio-based treatments. result that some genera more af...
Extraction properties of trivalent rare earth ions (RE(III)) from acidic chloride solutions with 6-N,N-di-n-octylcarbamoyl-pyridine-2-carboxylic acid (CPCA), which has three functional groups: an amide, a carboxylic and pyridine, were investigated by slope analyses the distribution ratio (D) RE(III) FT-IR measurements. The dependence D on pH CPCA concentration indicated that 1:3 RE(III)−CPCA co...
A regular monitoring program to study the pesticide concentration in surface waters has been carried out since 1976 in Hungary by the National Plant Protection Organization of the Ministry of Agriculture and Regional Development jointly with the Regional Water Authorities. At the beginning of this program a liquid-liquid partition method is used to extract the pesticides from water samples. Aft...
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