【摘 要】
：
A new on-line titration method and device based on a new technique-continuous flow titration is described. By the meansofelectronically controlled switching of
【机 构】
：
Department of Chemistry Engineering, Shanghai Institute of Technology, Shanghai 200233, ChinaChemist
论文部分内容阅读
A new on-line titration method and device based on a new technique-continuous flow titration is described. By the meansofelectronically controlled switching of a solenoid valve, the main component of the system, the equivalent point of the titration is easilydetermined. Several kinds of mixing tools were examined, whereby a self-made mixing chamber with minimum volume gave best re-sults and was therefore used in the device. The error of the titration is within 0.2% and the relative standard deviation (RSD) isbe-low 1.2%. The results show no difference compared with a commercial device, meanwhile the new on-line titration system is cheaperand fully automated and thus easy to hand and less solvent consumption.
其他文献
在辛克莱 (sinclair)公司要求采用两种调制标准之前几个星期 ,美国联邦通信委员会 (FCC)工程技术办公室为回答辛克莱公司的调制试验而发表了一份对 COFD M和 8VSB进行比较的
中药要想走向国际市场,实现中药的现代化进程是非常必要的,中药现代化可以实现中国传统文化的传承,促进中药行业的发展.药品上市前技术审评和都属于药品技术评价的范畴,今天
工程项目的造价预算工作至关重要,无论是对于施工单位还是建筑企业都是直接与其经济效益挂钩,大量实践数据表明,BIM技术已经得到了广泛肯定.BIM技术的运用,将实行工程造价管
We have constructed a compactly supported biorthogonal wavelet that approximates the modulation transfer function (MTF) of human visual system in the frequency
在社会的发展过程中,离不开电力的支撑,电厂作为电力输出的主要单位,其可持续发展关系到国计民生问题.电厂想要实现可持续发展战略目标,就要从其能源利用角度进行探究.基于此
要研析市政道路工程施工过程中的质量控制问题,必须将施工过程中的质量管理作为市政道路施工过程中的核心问题.新世纪以来,随着市场经济对高质量工程要求的与时俱进,同时伴随
In this paper we describe a system used to control,collect and process data in an 8 mm portable microwave radiometer-scatterometer . We focus on hardware and so
交通网络覆盖的范围是否广阔,覆盖国土是否全面,内部往来是否通畅,是衡量一个现代国家经济发展水平的重要指标.公路桥梁是组成交通网络系统的重要基础设施.公路桥梁的质量良
随着社会的发展,公路工程项目越来越多.公路工程建设过程中必须要做好工程检测工作,加强工程质量控制,有效提高公路质量.因此在实际应用中公路工程施工单位需要需要关注科学
With the aid of the properties of the hypersingular kernels, a geometric conversion approach was presented in this paper.The conversion leads to a general appro