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通过极谱法对甲醛进行测定
AB-196
通过极谱法对甲醛进行测定
概要
甲醛可以通过 DME(滴汞电极)进行还原测定。取决于样品组成,可以直接测定样品中的甲醛。如果发生了干扰,则有必要进行样品前处理,例如,吸附、提取、或是蒸馏。共描述了两种方法。在第一种方法中,在碱性溶液中对甲醛进行直接还原。浓度较高的碱金属或碱土金属都会产生干扰。在这样的情况下,应使用第二种方法。甲醛是胺生成腙时的衍生物,它可以在酸性溶液中通过极谱法进行测量。
Download AB-196 (EN)
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// Food – dairy
// Food – plant sources
// Plating baths – other metals
// Food – animal sources
// Plating baths – nickel
// Plating baths – copper
// Water – others
// Food – liquid food, functional food
用近红外光谱分析烘焙咖啡和研磨咖啡
NEW
// Caffeine, nicotine, and other stimulants 咖啡因、尼古丁和其他興奮劑
// Moisture, water 濕度、水
// Food & beverage 食品與飲料
基于丝网印刷技术的离子选择性电极
// Transition metals – iron, chromium 過渡金屬 – 鐵、鉻
// Electrochemistry 電化學
// R&D (Academia) 研究與開發(學術)
根据 EPA 300.1 进行水质检测
// EPA Method 300.1 Part B
// EPA Method 300.1 Part A
// Food & beverage 食品與飲料
使用便携式独立系统轻松监测发酵过程
// Electrochemistry 電化學
// Reaction monitoring 反應監測
// Beverages – alcoholic 飲料 – 酒精類
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