GYIG OpenIR  > 环境地球化学国家重点实验室  > 期刊论文
An improved dual-stage protocol to pre-concentrate mercury from airborne particles for precise isotopic measurement
Qiang Huang; YuLong Liu; JiuBin Chen; XinBin Feng; WeiLin Huang; hengLiu Yuan; HongMing Cai; XueWu Fu
2015
发表期刊Journal of Analytical Atomic Spectrometry
卷号30期号:4页码:957-966
摘要The Hg isotopic signature may provide insight into tracking the sources and pathways of both airborne particulate matter (PM) and particle-bound Hg (PHg) in the atmosphere. However, separating and concentrating trace levels of PHg and accurately analyzing its isotope ratios remain a technical challenge. Here, we optimized a combustion-trapping dual-stage protocol specifically for the pre-concentration of Hg from a PM sample collected on a quartz fiber membrane (QFM) for high-precision Hg isotopic analysis. The protocol was validated by testing synthetic samples of varying concentrations and trapping solutions of different volumes, and by comparison with two conventional methods (acid digestion and column purification). Using the dual-stage protocol, an individual sample containing up to 570 ng of Hg can be combusted at programmed temperatures in an Hg-free O-2 stream, and the volatilized gaseous Hg was trapped in a 5 mL acid (4 M HNO3 and 1.3 M HCl) mixture. The method results in a relatively lower procedural blank and quantitative recovery (99 +/- 6%, 2SD, n = 90). Long-term measurements of three certified reference materials (CRM021, CRM024, and GBW07405) with complex matrices using the optimized protocol gave identical Hg isotopic ratios of both mass-dependent fractionation (MDF) and mass-independent fractionation (MIF), in agreement with the results obtained from the standard addition method. The protocol was applied to two PM2.5 samples collected on a 20.3 x 12.5 cm QFM. The result showed evident variations of both MDF and MIF, highlighting the importance of studying Hg isotopic compositions in PM of variable environments in order to fully understand the behaviors of Hg and its isotopes in the atmosphere.
学科领域环境地球化学
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/352002/5951
专题环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文
环境地球化学国家重点实验室
推荐引用方式
GB/T 7714
Qiang Huang,YuLong Liu,JiuBin Chen,et al. An improved dual-stage protocol to pre-concentrate mercury from airborne particles for precise isotopic measurement[J]. Journal of Analytical Atomic Spectrometry,2015,30(4):957-966.
APA Qiang Huang.,YuLong Liu.,JiuBin Chen.,XinBin Feng.,WeiLin Huang.,...&XueWu Fu.(2015).An improved dual-stage protocol to pre-concentrate mercury from airborne particles for precise isotopic measurement.Journal of Analytical Atomic Spectrometry,30(4),957-966.
MLA Qiang Huang,et al."An improved dual-stage protocol to pre-concentrate mercury from airborne particles for precise isotopic measurement".Journal of Analytical Atomic Spectrometry 30.4(2015):957-966.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
An improved dual-sta(717KB) 开放获取使用许可浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Qiang Huang]的文章
[YuLong Liu]的文章
[JiuBin Chen]的文章
百度学术
百度学术中相似的文章
[Qiang Huang]的文章
[YuLong Liu]的文章
[JiuBin Chen]的文章
必应学术
必应学术中相似的文章
[Qiang Huang]的文章
[YuLong Liu]的文章
[JiuBin Chen]的文章
相关权益政策
暂无数据
收藏/分享
文件名: An improved dual-stage protocol to pre-concentrate mercury from airborne particles for precise isotopic measurement.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。