Fortschrittsbericht über die quantitative organische Mikroelementaranalyse. II

Bis(n-pentanethiolato)mercury(II), Hg(SC5H11)2 - Preparation, Characterization, Crystal and Molecular Structure; Reactivity towards Organic Thiols

“…Elemental analyses (C, H) were performed with a Heraeus Elemental Analyser, and sulphur was analysed ac cording to the method of Schöniger [55], DSC and TG measurements were obtained using a 910 Differential Scanning Calorimeter, a 951 Thermogravimetric Analyser, and a Thermal Analyst 2100 for data analyses.…”

Effect of Sulfated Modification on the Molecular Characteristics and Biological Activities of Polysaccharides fromHypsizigus marmoreus

“…The total carbohydrate and protein contents of the polysaccharides were respectively determined by the phenol-H 2 SO 4 method, using glucose as a standard, 19) and by the Lowry method, 20) using a commercial assay kit (DC Protein assay kit, Bio-Rad, USA). The sulfur content of the polysaccharides was determined by the BaCl 2 gelatin method, using K 2 SO 4 as a standard after hydrolyzing the polysaccharides in 0.5 M HCl at 105 C for 5 h. 21) The degree of substitution (DS) was calculated from the sulfur content on the basis of Schoniger's formula: 22) DS ¼ 1:62 Â S%=ð32{1:02 Â S%Þ. The FT-IR spectra (KBr disc) of the polysaccharides were recorded by using a Tensor 27 spectrophotometer (Bruker, Germany).…”

Investigation of Degradation of Pesticide Lontrel in Aqueous Solutions

“…The content of Cl was determined according to the Schöniger flask method (Schöniger, 1955). The analyzed substance (2-4 mg) was wrapped in filter paper placed in a Pt grid and hanged up to the cork of the flask.…”