AN-T-188 Iron content in iron ore Fast and accurate analysis according to ISO/TS 2597-4 Summary Iron ores occur in igneous, transformed, or sedimentary rocks. The most widely distributed iron-containing minerals are oxides, such as hematite (Fe2O3), magnetite (Fe3O4), or limonite…
AN-T-195 Determination of nitrogen content Kjeldahl determination according to USP general chapter <461> Summary The Kjeldahl method is used to determine the nitrogen content in organic and inorganic samples. The Kjeldahl analysis consists of three steps: digestion, distillation, and titration.…
AN-T-175 Nicotine content in tobacco Cost-efficient method using non-aqueous titration Summary Nicotine is an N-containing alkaloid that stimulates the parasympathetic nervous system, and is both highly addictive and dangerous to human health. Its toxic threshold value lies between 30–60 mg…