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Therefore, the quantity of ammonium nitrogen is a routine examination for the monitoring ... is widely used as an intermediate for the production of benzyl compounds and quaternary ammonium compounds ...

Department of Chemistry, National Sun Yat-sen University, Kaohsiung 804, Taiwan Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan ...

sublimation, distillation, differential extraction, chromatography - principles and their applications. Qualitative analysis - Detection of nitrogen, sulphur, phosphorus and halogens. Quantitative ...

Dark matter, also known as hidden/missing mass or nonluminous matter, is a component of the universe that spans 90 orders of magnitude in mass, ranging from ultralight bosons (often referred to as ...

Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610299, China University of Chinese Academy of Sciences, Beijing 100049, China ...