• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Automated Methods & Management in Chemistry: An International Journal Covering All Aspects of Automation and Mechanization in Analytical, Clinical and Industrial Environments and Published in Association with the Automation and Analytical Manag >Evaluation of a Multicommuted Flow System for Photometric Environmental Measurements
【24h】

Evaluation of a Multicommuted Flow System for Photometric Environmental Measurements

机译：对光度环境测量的多条形流量系统的评价

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A portable flow analysis instrument is described for in situ photometric measurements.This system is based on light-emitting diodes (LEDs) and a photodiode detector,coupled to a multipumping flow system.The whole equipment presents dimensions of 25 cm x 22 cm x 10 cm,weighs circa 3 kg,and costs 650 euro.System performance was evaluated for different chemistries without changing hardware configuration for determinations of (i) Fe~(3+) with SCN~-,(ii) iodometric nitrite determination,(iii) phenol with sodium nitroprusside,and (iv) 1-naphthol-N-methylcarbamate (carbaryl) with p-aminophenol.The detection limits were estimated as 22,60,25,and 60 ng mL~(-1) for iron,nitrite,phenol,and carbaryl at the 99.7% confidence level with RSD of 2.3,1.0,1.8,and 0.8%,respectively.Reagent and waste volumes were lower than those obtained by flow systems with continuous reagent addition.Sampling rates of 100,110,65,and 72 determinations per hour were achieved for iron,nitrite,phenol,and carbaryl determinations.
机译：用于原位光度测量的便携式流动分析仪器。本系统基于发光二极管（LED）和光电二极管检测器，耦合到多块流动系统。整个设备呈现25cm×22cm x 10的尺寸CM，大约3千克大约3千克，成本为650欧元。对不同化学物质评估了系统性能，而不会改变硬件配置，用于使用SCN〜 - （ii）碘硝酸盐测定（III）的（II）含有硝普钠钠，和（iv）1-萘酚-N-甲基氨基甲酸酯（Carbaryl），具有对氨基苯酚。估计铁，亚硝酸盐的检测限估计为22,60,25和60ng ml〜（-1），苯酚，碳酸在99.7％的置信水平，RSD分别为2.3,1.0,1.8和0.8％。较好的和废体积低于通过连续试剂添加的流量系统获得的体积。采样率为100,110,65，和对于铁，亚硝酸盐，苯酚和碳酸确定，实现了每小时的每小时确定每小时72个测定离子。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号