Wako Blog

Introducing a wide range of research topics, technical reports, and tips for your experiments.

Analytical Chemistry

Analytical Chemistry

Risk Assessment and Control in the Guideline for Elemental Impurities in Drugs

The original article by Rina Nishioka, Soichiro Hanakawa of the Sumika Chemical Analysis Service, Ltd., appeared in an e-newsletter of FUJIFILM Wako Pure Chemical Corporation and was translated by the company.

A regulatory guideline for elemental impurities in drug products was formulated by the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH). In Jap...

Analytical Chemistry

Effects of Trace Metals (Impurities) in Chemicals Used in Semiconductor Manufacture and Their Analysis

The original article by Yukihisa Kawada of the FUJIFILM Corporation, appeared in an e-newsletter of FUJIFILM Wako Pure Chemical Corporation and was translated by the company.

In recent years, the manufacturing process for semiconductors has become increasingly complex in order to meet the technical requirements for smaller size and higher performance. In this situation, qu...

Analytical Chemistry

Arsenic compounds contained in various foods

Arsenic (As) is an element occurring in the Earth's crust mainly as sulfides such as As3S3, As4S4, and FeAsS. Because it is released into the environment through natural phenomena such as volcanic act...

Analytical Chemistry

Precautions in Pre-treatment of Environmental Water Samples by Chelating Resin Preconcentration Method

The original article by Dr. Eiji Fujimori of the National Environmental Research and Training Institute, Ministry of the Environment, appeared in an e-newsletter of FUJIFILM Wako and was translated by the company.

Inductively coupled plasma mass spectrometry (ICP-MS) is capable of simultaneous analysis of multiple elements at extremely low levels and is the most sensitive elemental analysis method among common ...

Analytical Chemistry Technical Report

[Chromatography Q & A]: What Methods are Available for LC/MS Analysis of Highly Polarized Analytes?

This article was written for No. 42 (October 2006), of Analytical Circle.

For columns used in LC/MS, highly versatile reverse-phase octadecyl-silica gel (C18, ODS) is a mainstay packing agent. This ODS packing agent, however, has difficulty in separating a particular type o...

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