1 basic principles. Physical adsorption, also known as adsorption dioctyl use, because constituent molecules solution (containing solute and solvent) and molecular adsorbent surface molecules in the interaction caused. Adsorbent a) basic rule: "alikes easily adsorbed" dioctyl phthalate, when the solid-liquid adsorption, the adsorbent, solute, solvent adsorption process collectively referred to as three three elements. b) Basic features: non-selective, reversible adsorption and fast. c) Rationale: adsorption and desorption of reciprocating cycle. d) three elements: an adsorbent, a solute (material to be separated), the solvent. Mass spectrometry of the samples has certain requirements. GC-MS analysis were samples should be an organic solution, aqueous solution of organic matter in general can not be measured, to be separated into organic extraction solution, or using headspace technology. Some polar compound is too strong, easy to decompose in the heating process, for example an organic acid compounds, this time can be esterified processed, then the acid into ester GC-MS analysis, the results of the analysis can be speculated that the structure of acid. If the sample does not vaporize nor esterification, it only LC-MS analyzes. LC-MS analysis carried out sample is preferably an aqueous solution or a methanol solution, dioctyl manufacturers offer, LC mobile phase should not contain non-volatile salts. For polar sample dioctyl price, the general ESI source, for non-polar samples using the APCI source. Xiang dry chemical (Figure) _ _ Baoding dioctyl price dioctyl stem from Jinan Cheung Chemical Limited. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) adhere to the "people-oriented" business philosophy, has a professional staff, and strive to provide the best products and services to contribute to the community, and to welcome new and old customers to visit and sincere cooperation for a better future. Xiang dry chemical - your trusted friend, Company Address: Industrial Road chemical market, Contact: Mr.