学会选用食物,补充微量元素

补钙食物：畜类、虾类、谷类、黑色食品。补镁食物：蜂产品、昆虫类、叶菜类、水果类、鱼类。补锌食物：鱼类、贝类、豆类、蜂产品、昆虫类、禽类。补铁食物：禽类、黑色食品、叶菜类、菌类、昆虫类、动物血。补铜食物：虾类、贝类、瓜茄类、坚果类。     

三七生长初期不同部位微量元素的含量测定

采用电感耦合等离子体发射光谱法(ICP-AES),对文山地区GAP种植及农户常规种植的生长初期三七不同部位中的微量元素Mg、P、Ca、Mn、Na、Fe、Co、Cu、Zn、Mo、Cr、Ni、Ge、Se等14种元素进行了测定分析。结果表明,三七的根、茎、叶中含有丰富的人体必需Mg、P、Ca、Mn、Na、Fe、Co、Cu、Zn、Mo、Ge、Se等有益元素,且P、Ca、Mg、Fe含量较高,Na、Mn、Co、Zn次之,Co、Mo、Cr、Ni、Ge、Se含量均较低。为三七GAP栽培标准和特征制订、三七道地药材的化学特征——化学指纹图谱的建立及研究提供理论依据。     

原子吸收光谱法测定水生生物体内铜、锌、镍、铬、铅、镉

用硝酸-高氯酸体系消解螺蛳和水葫芦样品,采用火焰原子吸收光谱法测定铜、锌、镍、铬,用石墨炉原子吸收光谱法测定铅、镉。铜、锌、镍、铬、铅、镉的检出限分别为0.328、0.126、0.271、0.416、0.006 64、0.001 15 mg/kg,线性相关系数不小于0.999 0,测定结果的相对标准偏差为1.1%~3.7%,加标回收率为86.0%~94.2%。     

2010年《中国无机分析化学文摘》征订启事

《中国无机分析化学文摘》1984年创刊,本刊以文摘、简介及题录形式报道国内公开发行的有机无机分析化学的期刊300余种及各种会议论文集、新标准、新书目等,年收录文献4000篇左右。栏目分为:一般问题、重量法与滴定法、光度法、电化学分析、光谱分析、色谱分析、物相分析、气体分析、活化分析、质谱分析、分离方法、贵金属分析等。     

元素医学食疗法治病有疗效

南京金陵微量元素与健康研究所用元素医学食疗法治疗冠心病、癌症、脑血管病、老年痴呆症、糖尿病、艾滋病、帕金森氏综合症、脑中风及其后遗症、小儿脑瘫、系统性红斑狼疮、癫痫、精神分裂症、血小板减少、肌痉挛、肌无力、肌萎缩、胆汁反流、偏头痛、前列腺肥大、性机能低下、不孕、不育、肝胆结石、脱发、斑秃、白癜风、银屑病、再障贫血、血友病、白血病、荨麻疹、哮喘、风湿、类风湿、高（低）血压、高血脂、高血糖、高血沉、高尿酸、动脉硬化、骨质疏松、元素中毒症,地方病,遗传病等现代医学界束手无策的疑难病症,先后都获得了很好的疗效。     

ICP-AES法测定铜精矿中As、Sb、Bi、Ca、Mg、Pb、Co、Zn和Ni

提出采用ICP-AES法同时测定铜精矿中As、Sb、Bi、Ca、Mg、Pb、Zn、Ni、Co的分析方法:样品经王水 HF HClO4溶液后,直接测定。该方法测定As、Sb、Bi、Ca、Mg、Pb、Zn、Ni、Co的回收率在97.9%~102%之间,相对标准偏差在0.23%~2.5%之间。通过和国家标准物质比对及国家标准分析方法的比对,结果准确可靠,现该方法已用于本公司铜精矿的日常分析。     

2008年高考理综全国卷（Ⅰ）与卷（Ⅱ）化学试题的对比分析

2008年高考理综全国卷(Ⅰ),陕西、湖北、湖南、安徽、福建、浙江、辽宁、江西、广西、河北、山西、河南等省区采用;理综全国卷(Ⅱ),黑龙江、吉林、内蒙古、甘肃、青海、云南、贵州、新疆、西藏等省区采用.这2套试卷的化学试题难度有明显的差异,本文做一对比分析.     

《精细化工配方常用原料手册》

侯滨滨主编杜晓雪、张浩副主编本书列举了精细化工配方中常用的原料954余种,主要涉及无机、有机、高分子、有机溶剂、工业填料、化学助剂等种类。用其可以混配出数以千计的各种精细化学品。书中每个品种以表格形式总结其物化性质、安全性、应用性能、生产方法及质量指标。可供精细化工及应用领域如食品、化妆品、洗涤剂、皮革、造纸、金属加工、石油加工、环保卫生等从业人员参考。     

元素医学食疗法治病有疗效

南京金陵微量元素与健康研究所用元素医学食疗法治疗冠心病、癌症、脑血管病、老年痴呆症、糖尿病、艾滋病、帕金森氏综合症、脑中风及其后遗症、小儿脑瘫、系统性红斑狼疮、癫痫、精神分裂症、血小板减少、肌痉挛、肌无力、肌萎缩、胆汁反流、偏头痛、前列腺肥大、性机能低下、不孕、不育、肝胆结石、脱发、斑秃、白瘢风、银屑病、再障贫血、血友病、白血病、荨麻疹、哮喘、风湿、类风湿、高（低）血压、高血脂、高血糖、高血沉、高尿酸、动脉硬化、骨质疏松、元素中毒症,地方病,遗传病等现代医学界束手无策的疑难病症,先后都获得了很好的疗效。     

蔬菜搭配与微量元素

人们都想了解和掌握必需微量元素和宏量元素含量配合较为均衡的蔬菜。根据专家们的研究发现,在人们食用的蔬菜中,含人体必需宏量元素和微量元素适量同时较为均衡的蔬菜有20多种,它们是：白萝卜、胡萝卜、小白菜、小青菜、油菜、蕹菜、白茱苔、蒜苗、油角豆、马兰头、韭菜、苦瓜、芪椰菜、莴苣笋（茎）、山药、芦笋、蒜苔、藕、红辣椒、青辣椒等,这些蔬菜所含的人体必需微量元素如：Fe、Me、Zn、Cu、Se等和人体必需宏量元素如K、Na、Ca、Mg等都是中等量,并且含量都是比较均衡,为人们日常调配饮食,购买、     

废弃天然高分子基功能材料

从废弃高分子角度对废弃生物质的高附加值再利用进行综述,阐述了废弃生物质中天然高分子的类型以及废弃生物质中包含的大量天然高分子具有官能团丰富、可降解、生物相容、无毒无害等优异的性能,归纳了废弃生物质的传统处理方法及作为材料使用的再利用途径,介绍了废弃天然高分子用作复合材料、吸附材料、载体材料、能源材料、医用高分子材料、智能高分子材料等的研究进展,并对废弃天然高分子的资源化利用进行了展望。     

高分子时代的天然高分子

本文从资源利用的战略角度讨论了发展及加强天然高分子研究的重要性。以几个天然高分子为例讨论了它们的研究动向及进展。与合成高分子相比，指出了天然高分子研究中存在的问题。文中对我国学者在这一领域中所作的卓越贡献做了简要介绍。     

天然高分子用于油田堵水调剖的研究进展

从改性天然高分子材料出发,对各类天然高分子材料,如淀粉、纤维素、壳聚糖、硬葡聚糖、瓜胶、黄胞胶等作为油田堵水调剖剂的研究进展作了综述,并对天然高分子材料作为堵剂存在的问题及发展趋势进行了阐述。     

Review: Raw Natural Fiber–Based Polymer Composites

The effective utilization of raw natural fibers as indispensable component in polymers for developing novel low-cost eco-friendly composites with properties such as acceptable specific strength, low density, high toughness, good thermal properties, and biodegradability is one of the most rapidly emerging fields of research in polymer engineering and science. In fact, raw natural fiber–reinforced composites are the subject of numerous scientific and research projects, as well as many commercial programs. Keeping in mind the immense advantages of raw natural fibers, in the present article we concisely review raw natural fiber/polymer matrix composites with particular focus on their mechanical properties.     

Micro‐Nanostructures of Cellulose‐Collagen for Critical Sized Bone Defect Healing

Bone tissue engineering strategies utilize biodegradable polymeric matrices alone or in combination with cells and factors to provide mechanical support to bone, while promoting cell proliferation, differentiation, and tissue ingrowth. The performance of mechanically competent, micro‐nanostructured polymeric matrices, in combination with bone marrow stromal cells (BMSCs), is evaluated in a critical sized bone defect. Cellulose acetate (CA) is used to fabricate a porous microstructured matrix. Type I collagen is then allowed to self‐assemble on these microstructures to create a natural polymer‐based, micro‐nanostructured matrix (CAc). Poly (lactic‐co‐glycolic acid) matrices with identical microstructures serve as controls. Significantly higher number of implanted host cells are distributed in the natural polymer based micro‐nanostructures with greater bone density and more uniform cell distribution. Additionally, a twofold increase in collagen content is observed with natural polymer based scaffolds. This study establishes the benefits of natural polymer derived micro‐nanostructures in combination with donor derived BMSCs to repair and regenerate critical sized bone defects. Natural polymer based materials with mechanically competent micro‐nanostructures may serve as an alternative material platform for bone regeneration.     

A Model for Evaluating and Determining the Most Appropriate Polymer Matrix Type for Natural Fiber Composites

The process of determining the proper polymer matrix type, using a wide range of criteria, to form a natural fiber–reinforced polymer composite is still not established enough. This work introduces, for the first time, a model to select the proper polymer matrix type for natural fibers to enhance the sustainability of the automotive industry. The model was developed to rank different polymers and to determine their relative merits considering 20 different criteria simultaneously, including different physical, mechanical, chemical, environmental, and technical criteria. This work can support establishing a road map for proper selection of polymers in different engineering applications as well as increasing the reliability of the polymer selection process.     

Synthesis of Electrolyte Polymer Based on Natural Polymer Chitosan by Ion Implantation Technique

This research is conducted to make solid-state electrolyte based on natural polymers, as an alternative material for energy storage such as battery. Natural polymers as materials of solid state batteries have various benefits, such as unlimited abundance, biodegradable, unleakage, stable form, excellent process, and electrochemical stability, compare to the liquid ones. In this study, a solid state polymer electrolyte based on natural polymer such as chitosan was synthesized by incorporating various ion salts (Li, Cu, Ag) in the polymer matrix. The synthesis of solid-state electrolyte polymer was carried out by casting method to make a thin polymer film. Then the ionic (Li, Cu, Ag) doping with various implant dose will be applied to the thin polymer film matrix by ionic implantation technique. The implanted polymer electrolytes are then characterized their conductivities, micro structures, and crystal structures by high precision LCR, scanning electron microscopy-electron dispersive spectroscopy (SEM-EDS), and X-ray diffraction (XRD), respectively. The measured of conductivities showed that thin film polymers after implanted with ionic Li, Cu or Ag were increased the conductivity, meanwhile elemental analisys by electron dispersive spectroscopy indicated that ionic implant to chitosan was success. The modification of chitosan polymer to become electrolyte polymer can be concluded.     

The Use of Megamolecular Polysaccharide Sacran in Food and Biomedical Applications

Natural polymer is a frequently used polymer in various food applications and pharmaceutical formulations due to its benefits and its biocompatibility compared to synthetic polymers. One of the natural polymer groups (i.e., polysaccharide) does not only function as an additive in pharmaceutical preparations, but also as an active ingredient with pharmacological effects. In addition, several natural polymers offer potential distinct applications in gene delivery and genetic engineering. However, some of these polymers have drawbacks, such as their lack of water retention and elasticity. Sacran, one of the high-molecular-weight natural polysaccharides (megamolecular polysaccharides) derived from Aphanothece sacrum (A. sacrum), has good water retention and elasticity. Historically, sacran has been used as a dietary food. Moreover, sacran can be applied in biomedical fields as an active material, excipient, and genetic engineering material. This article discusses the characteristics, extraction, isolation procedures, and the use of sacran in food and biomedical applications.     

Grafting of Vinyl Monomers onto Nylon

Polymer chemists have been successful in applying polymerization techniques to develop copolymers of natural and synthetic macromolecules [l]. The literature abounds with examples of the successful formation of copolymers from natural and synthetic macromolecules [2–5]. Copolymerization is attractive to chemists as a means of modifying macromolecules since, in general, degradation can be minimized. Despite the heterogeneity and complexity of these copolymers, much has been achieved in their characterization. The desirable properties of the polymer are retained and additional properties are acquired through the added polymer. The desired material may be formed in situ by polymerization of a monomer or monomers, by condensation of reactants, or by the decomposition of a preformed polymer.     

Thermal decomposition kinetics of natural fibers: Activation energy with dynamic thermogravimetric analysis

Dynamic TG analysis under nitrogen was used to investigate the thermal decomposition processes of 10 types of natural fibers commonly used in the polymer composite industry. These fibers included wood, bamboo, agricultural residue, and bast fibers. Various degradation models including the Kissinger, Friedman, Flynn-Wall-Ozawa, and modified Coats-Redfern methods were used to determine the apparent activation energy of these fibers. For most natural fibers approximately 60% of the thermal decomposition occurred within a temperature range between 215 and 310 °C. The result also showed that an apparent activation energy of 160-170 kJ/mol was obtained for most of the selected fibers throughout the polymer processing temperature range. These activation energy values allow developing a simplified approach to understand the thermal decomposition behavior of natural fibers as a function of polymer composite processing.