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植物中S元素检测方案(ICP-AES)

The determination of the elemental composition in plants is important for development, growth and maintenance of plant tissues. Elements, such as Al, B, Ba, Ca, Cu, Fe, K, Mg, Mn, S, Sr, P, and Zn, are important for plant nutrition, being vital nutrients required for tissue development, maintenance and plant metabolism [1]. The determination of macro, micronutrients and contaminants in plant samples is important to keep up with sources of nutrients and minerals. The chemical analysis of plant materials can be applied to assist in the remediation of contaminated soils or to solve mineral malnutrition, a problem that seriously affects the human population [2, 3]. Inductively coupled plasma optical emission spectrometry (ICP-OES) is an attractive technique for this analysis because it can accommodate the wide concentration ranges typical of macro and micronutrients in plants. 2 Agronomical laboratories typically deal with large batches of samples. Several critical elements, in wide concentration ranges, must be determined on a routine basis for such samples. The Agilent 5100 Synchronous Vertical Dual View (SVDV) ICP-OES with Dichroic Spectral Combiner (DSC) technology, has the ability to keep up with these demands, performing axial and radial measurements in a single reading, leading to faster sample throughput times. With faster sample run times, the 5100 SVDV requires less argon per sample, meaning significant savings can be made for labs involved in high throughput analysis. The Vista Chip II detector used in the 5100 ICP-OES has the fastest processing speed (1 MHz) of any charge coupled device (CCD) detector used in ICP-OES. It delivers fast warm-up, high throughput, high sensitivity, and the largest dynamic range. This application note describes the quantitation of Al, B, Ba, Ca, Cu, Fe, K, Mg, Mn, P, S, Sr and Zn in microwave acid digested alfalfa, corn and sugarcane samples and an apple leaves certified reference material (SRM NIST 1515), using the Agilent 5100
检测样品: 其他
检测项: S元素

安捷伦科技(中国)有限公司

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生物组织中三甲基氯化锡检测方案(气相色谱仪)

由于有机锡在农业,工业和家庭中被广泛使用,因此其对环境的影响受到了极大的重视。丁基锡和苯基锡已被广泛用作活性杀生物剂,在防污涂料、聚氯乙烯(PVC)稳定剂、木材处理,以及其他方面都有应用。例如,当被用于防污涂料时,痕量水平(ppt)的丁基锡和苯基锡将会对非靶标生物造成严重损害,并在沉积物和生物群中累积。因此,欧盟(EU)将三丁基锡(TBT)及其降解产物列入到优先控制污染物名单中(修订水框架指令2000/60/EC的决定2455/2001/EC)。由于TBT、三苯基锡(TPhT)以及它们的降解产物(二取代锡, 单取代锡和无机锡)各自的毒性存在差异,而且对环境影响的监测也不相同, 因而非常有必要对有机锡的形态进行分析。由于气相色谱-电感耦合等离子体质谱(GC/ ICP-MS)联用法具有灵敏度高,选择性好,可以同时分析多种元素和多种同位素等优势,因此成为了金属有机物痕量分析的首选方法。通过GC/ ICP-MS开展有机锡形态分析,为了增加各形态的挥发性,需要加入四丙基硼酸钠或四乙基硼酸钠进行衍生化反应。此外,对于复杂基质,如生物组织和沉积物的分析,在有机锡化合物衍生前需要进行软提取,以保持分析物的形态不发生改变。开放聚焦微波提取由于具有快速和高效的优点,是最流行的提取方法。本实验使用GC/ ICP-MS(CLARUS®GC 和NexION®ICP-MS)对有机锡形态进行分析,更具体地说,是通过外标法对生物样品中的单丁基锡、二丁基锡和三丁基锡进行分析。而且在实验中特别注意了对连接GC和ICP-MS的GC传输线参数的优化
检测样品: 其他
检测项: 三甲基氯化锡

珀金埃尔默企业管理(上海)有限公司

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仪器信息网行业应用栏目为您提供1690篇其他检测方案,可分别用于荧光成像检测、DNA纯度检测、种类检测、分离纯化检测,参考标准主要有等