应用同位素和元素分析鉴别稻米的原产地

内容节点: 概述; 实验/设备条件; 样品提取; 实验/操作方法; 实验结果/结论; 仪器/耗材清单

Rice samples cultivated in the USA, Europe and Basmati regions have been analysed using Isotope Ratio Mass Spectrometry (IRMS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Nine key variables (13C, 18O, boron, holmium, gadolinium, magnesium, rubidium, selenium and tungsten) were identified by canonical discriminant analysis as providing the maximum discrimination between rice samples from these regions. High levels of boron (>2500 ppb) were associated with rice samples from America and notably high levels of holmium were found in rice samples from the state of Arkansas. European rice samples generally contained relatively high levels of magnesium and Indian/Pakistani samples were characterised by relatively low oxygen-18 ( 18O) abundance.

相关产品

您可能感兴趣的解决方案

IsoPrime稳定同位素质谱仪测空气中甲基溴的稳定同位素组

Methyl bromide (CH3Br) constitutes the largest source
Isoprime稳定同位素质谱仪快速测量食品以及其他生物材料

The isotope ratio of each of the light elements preser
使用IsoPrime稳定同位素质谱仪测浙江省中部地区大气环境

Sulfur dioxide and sulfate aerosols in the atmosphere
IsoPrime稳定同位素质谱仪通过长链烷烃的同位素特征来区

Combined with quantitative determination of concentrat
ICP-MS测定大气颗粒物中铅的同位素比值研究

通过对电感耦合等离子体质谱（ICP-MS）的工作条件和参数进行优化，建立了ICP-MS测定铅同位素比值的极n
ICP-MS测定大颗粒物中铅的同位素比值研究

使用德国耶拿（原布鲁克）高灵敏度高分辨率ICP-MS M90，测定大气颗粒物中的Pb同位素丰度比值，进行大气
矿物油同位素分析

梅特勒-托利多,METTLER-TOLEDO（纽约证券交易所代码：MTD）：世界上首台替代法单盘天平的fa明
使用同位素稀释-三重四极杆 ICP-MS (ID-ICP-MS/MS) 准确

Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
确定食品原产地的分析方法概述

在这里我们要着重介绍的是质子转移反应质谱（PTR-MS）PTR-MS使用一种软离子化技术，用于在线定量监测挥