The chromatographic behavior of twenty three amino acids on the silica gel thin layers using sodium dodecylsulfate(SDS)/ n butyl alcohol/ n hexane/water microemulsion as a developer have been studied. The results show...The chromatographic behavior of twenty three amino acids on the silica gel thin layers using sodium dodecylsulfate(SDS)/ n butyl alcohol/ n hexane/water microemulsion as a developer have been studied. The results showed that the W/O microemulsion and the bicontinuous microemulsion composed of the mentioned components appeared suitable developers for TLC analysis of amino acids.展开更多
Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of s...Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of superabsorbents in the salt solutions decreased with increase in the ionic strength of the salt. For the same ionic strength of chloride salt solutions, the water absorbency had the following tendency: Na +>Ca 2+ >Fe 3+ ,Li +>Na +>K +, and Mg 2+ >Ca 2+ >Ba 2+ . The influences of anion valency of salts with a common cationic ion(Na +) on the water absorbency were the order of mononalent<divalent<trivalent anions.展开更多
文摘The chromatographic behavior of twenty three amino acids on the silica gel thin layers using sodium dodecylsulfate(SDS)/ n butyl alcohol/ n hexane/water microemulsion as a developer have been studied. The results showed that the W/O microemulsion and the bicontinuous microemulsion composed of the mentioned components appeared suitable developers for TLC analysis of amino acids.
文摘Effects of aqueous salt solutions on the absorbency of superabsorbents synthesized by inverse suspension copolymerization of acrylic acid with acrylamide were studied. The results showed that the water absorbency of superabsorbents in the salt solutions decreased with increase in the ionic strength of the salt. For the same ionic strength of chloride salt solutions, the water absorbency had the following tendency: Na +>Ca 2+ >Fe 3+ ,Li +>Na +>K +, and Mg 2+ >Ca 2+ >Ba 2+ . The influences of anion valency of salts with a common cationic ion(Na +) on the water absorbency were the order of mononalent<divalent<trivalent anions.