"自动回流消化仪"消化-AFS法测定油中的砷

本文报道了“自动回流消化仪”消化，原子荧光光度法测定的油中的砷。“自动回流消化仪”消化油既防止了砷元素的损失，又能使油容易消化，同时在试剂用量、劳动强度、消化速度等方面都有较好的效果。原子荧光光度法，采用新的仪器和原理，提出了方法的灵敏度。该法回收率为91.8％－104.7%,相对标准偏差0.51%，与传统湿法消化法比较无显著性差异（t0.05）。     

氢化物-原子荧光法同时测定大米中的砷和硒

采用氢化物-原子荧光光谱法测定大米中的砷和硒。在0～10μg／L范围内,砷和硒的浓度与荧光强度呈线性关系,相关系数分别为0．9996和0．9998,加标回收率分别为96．2％～100．8％和98．1％～107．6％,砷、硒测定结果的相对标准偏差分别不大于6．8％,5．7％（n=6）。     

流动注射—氢化物发生双道原子荧光仪同时测定水样中砷和锑

提出一种流动注射－氢化物发生双道原子荧光同时测定水样中痕量砷和锑的新方法,砷和锑的标准曲线范围为0－40ug.L^-1相对标准偏差小于5％,回收率为90－107％,检出限为0．025ug.L^-1。     

断续流动氢化物发生原子荧光法测定饮用矿泉水中硒

介绍断续流动氢化物发生原子荧光测定饮用矿泉水中硒的方法， 研究了酸度、硼氢化钾浓度、灯电流、载气流速等对测定硒的影响，找出最佳测定饮用矿泉水中硒的条件。方法具有操作简便、快速、灵敏度高等优点。     

Biodegradable Cell-Seeded Collagen Based Polymer Scaffolds for Wound Healing and Skin Reconstruction

In the present study a collagen-glycosaminoglycans scaffold, following chemical modifications, was prepared as an analog of the extracellular matrix (ECM) by a freeze drying method. Appropriate tests related to its use for wound healing (evaluation of the structure by scanning electron microscopy, swelling properties, biodegradability properties, Fourier transform infrared spectroscopy and cell culture) were done on the scaffolds. Amniotic fluid-derived stem (AFS) cell seeded scaffolds were shown to be potentially useful for wound healing.