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。     

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.     

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、     

蔬菜搭配与微量元素

人们都想了解和食用必需微量元素和宏量元素含量配合较为均衡的蔬菜。根据研究发现,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：     

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。     

《色谱》投稿须知(2022)

《色谱》是中国化学会和中国科学院大连化学物理研究所主办、中国科学技术协会主管、国内外公开发行的专业性学术期刊,月刊。主要报道色谱学科的基础性研究成果、色谱及其交叉学科的重要应用成果及其进展,包括新方法、新技术、新仪器在各个领域的应用,色谱仪器与部件的研制和开发。被Medline、ESCI、CA、CSA、JST、AA、CHI、MSB-S、AJ、IC、SCOPUS等收录。曾入选百种中国杰出学术期刊、中国最具国际影响力学术期刊、中国科学院优秀期刊、中国科协优秀期刊、中文核心期刊、中国科技核心期刊、中国精品科技期刊、中国科协精品科技期刊工程项目。     

电感耦合等离子体发射光谱法测定高纯稀散金属中杂质元素研究进展

综述了电感耦合等离子体发射光谱法测定高纯稀散金属中镓、铟、铊、锗、硒、碲、铼中杂质元素的研究进展,分析了样品测定过程与重点,分别对镓、铟、铊、锗、硒、碲、铼进行了介绍,重点讨论了基体的干扰和消除,并对测定高纯稀散金属中杂质元素的发展方向提出建议。     

2015年分析仪器与装置研制发展战略研讨会在长春召开

2015年1月20日-22日,由国家自然科学基金委员会化学部主办,电分析化学国家重点实验室承办的2015年分析仪器与装置研制发展战略研讨会在长春成功举行。此次研讨会以分析化学学科在研仪器研制项目取得的成果与存在的问题为主题。邀请到来自厦门大学、湖南大学、聊城大学、中山大学、临沂大学、清华大学、南京大学、北京大学、山东大学、浙江大学、四川大学、上海交通大学、华南理工大学、西北师范大学、安徽大学、中国科学技术大学、广西师范大学、中国石油大学(北京)、延边大学、中科院生态环境研究中心、中科院化学研究所和中科院大连化学物理研究所等20余所大学和研究所的40余位专家出席了本次研讨会。电分析化学国家重点实验室汪尔康院士、董绍俊院士、杨秀荣院士等全体研究员参加了本次会议。     

新一代萃取分离技术──固相微萃取

介绍了一种新型样品制备法——固相做萃取（SPME）的原理及其应用。与其它样品制备技术相比,SPME法具有操作时间短、样品量小、无需萃取溶剂、适于分析挥发性与非挥发性物质、重视性好等优点。     

Programmed cold sample introduction and multidimensional preparative capillary gas chrornatography. Part I: Introduction,design and operation of a new mass flow controlled multidimensional GC system

A new design of a mass-flow controlled multidimensional switching system for capillary gas chromatography is introduced and discussed. Large sample amounts can be introduced with a required input band width onto the first column. A combination of cold sample introduction and successive high speed programmed heating of the injector liner is used for this purpose. The potential of such an approach for selective and fast high resolution separations with series coupled wide bore, thick film columns is emphasized, and illustrated for various concentrations.     

Analysis of cast iron by x-ray fluorescence spectrometry

It is shown that a wide range of cast irons can be analysed on one calibration if the sample surfaces are prepared to a mirror finish with diamond paste. Polishing the samples with any abrasive material results in preferential removal of the softer constituents from the sample matrix. If coarser abrasives than diamond paste are used, the increased depth of the introduced sample inhomogeneity leads to unacceptable error limits for the determination of light elements.     

Electroinjection analysis. The introduction of a new variant of flow-injection analysis and comparison with electrophoretically-mediated microanalysis

A new method of mixing sample and reagent due to the difference in their electrophoretic mobilities is introduced. Unlike electrophoretically-mediated microanalysis, sample and reagent are injected from the opposite ends of a capillary tube. This method is compared with electrophoretically-mediated microanalysis. Experiments are performed showing the possibilities of this new method.     

Capillary electrophoresis: An integrated system with a unique split-flow sample introduction mechanism

The performance of an integrated capillary electrophoresis system with a novel split-flow sample injection mechanism and special high sensitivity UV absorbance detector is described. Sample introduction into the capillary is accomplished with a standard HPLC-type microliter syringe. The injected sample is divided proportionally between the separation capillary and an adjustable splitvent. The volume of sample introduced into the capillary can be manipulated by varying the length or the i.d. of the splitvent tubing; or the volume of sample injected. Data are presented showing reproducibility of retention time, peak height, and peak area; minimum detectability; and operation at short UV wavelengths.     

Determination of barium in marine waters by isotope dilution inductively coupled plasma mass spectrometry

A simple and accurate method is presented for determining barium in marine waters. Equal amounts of an enriched isotope spike and sample are diluted 100-fold with 1% nitric acid. The diluted sample is introduced into an inductively coupled plasma mass spectrometer with a peristaltic pump and the mass region from 135 to 138 is scanned 480 times. The entire procedure takes less than 10 min per sample and is accurate to better than 1% as determined by intercalibration with isotope dilution mass spectrometry.     

Miniaturized sample preparation combined with liquid phase separations

Miniaturized sample preparation methods designed as the sample pretreatment for liquid phase separations, such as liquid chromatography, capillary electrophoresis and capillary electrochromatography, have been reviewed especially for the on-line coupling of the sample preparation process and the separation process. The development of the desorption interfaces for the effective combining of the sample preparation and subsequent liquid phase separations is briefly described along with the applications of the combined analytical systems to the analysis of complex sample mixtures such as biological and environmental matrices. Novel use of fine polymeric filaments as the extraction medium for microscale liquid phase separation methods are investigated and a comparison is made with other sample preparation techniques. Polymer coating onto the fibrous material is also introduced to further develop microscale sample preparation methods with improved extraction performance. Several other microscale sample preparation methods having a potential compatibility to the liquid phase separations are also described for future applications of these techniques.     

An improved reaction valve for flow injection analysis

Summary A new type reaction valve for flow injection analysis has been developed. In a FIA system with this valve the injected sample is once passed into a loop of the valve, thereafter the valve is rotated to the next position. Therefore, the sample is retained in the loop in a stop-state for a long time and the next sample is introduced into another loop in the next position. When the valve is rotated for one round, the stopped sample in the fist loop is again passed into the detector flow cell. Thus, an analysis, which needs a long reaction time, can be performed with this valve with high precision.

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Verbessertes Reaktionsventil für die Flie\injektionsanalyse

     

An automatic sampling device for capillary zone electrophoresis

An automatic sampling device has been developed for capillary zone electrophoresis. The sample is introduced to the column electrokinetically by rapidly exchanging buffer for sample in a narrow channel drilled in a plexiglass block. The autosampler is capable, under computer control, of performing multiple sample injections from a large volume sample source (such as a reaction vessel) as the sample concentration changes, and thus presents the possibility of analyzing time-varying processes by CZE. Peak area reproducibility in electropherograms obtained after use of the sampler is less than 1% and efficiency is more than 2.2 × 10⁵ theoretical plates.     

A low-leakage sample plug injection scheme for crossform microfluidic capillary electrophoresis devices incorporating a restricted cross-channel intersection

This study develops a crossform CE microfluidic device in which a single-circular barrier or a double-circular barrier is introduced at the cross-channel intersection. Utilizing a conventional crossform injection scheme, it is shown that these barriers reduce sample leakage and deliver a compact sample band into the separation channel, thereby ensuring an enhanced detection performance. A series of numerical and experimental investigations are performed to investigate the effects of the barrier type and the barrier ratio on the flow streamlines within the microchannel and to clarify their respective effects on the sample leakage ratio and sample plug variance during the injection process. The results indicate that a single-circular barrier injector with a barrier ratio greater than 20% and a double-circular barrier injector with a barrier ratio greater than 40% minimize the sample leakage ratio and produce a compact sample plug. As a result, both injectors have an excellent potential for use in high-quality, high-throughput chemical analysis procedures and in many other applications throughout the micro-total analysis systems field.