仪器网

欢迎您: 免费注册 仪器双拼网址:www.yiqi.com
首页-资讯-资料-产品-求购-招标-品牌-展会-行业应用-社区-供应商手机版
官方微信
中国仪器网• 行业应用
仪器网/ 行业应用/ 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

IsoPrime稳定同位素质谱仪测空气中甲基溴的稳定同位素组

点击这里给我发消息
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
Methyl bromide (CH3Br) constitutes the largest source
of bromine atoms to the stratosphere and plays an important
role in stratospheric ozone depletion. However, the CH3Br
atmospheric budget remains uncertain. We report the first
measurements of stable carbon isotope ratios for
atmospheric CH3Br and explore the constraints they
provide for the atmospheric budget. The measured d13C
of CH3Br ranged from 44.8% to 41.2% (mean value
43.1%, N = 7). This isotopic value is less negative than
the anthropogenic source signature (53.2 to 47.5%), but
is indistinguishable from the only quantified natural source
signature (43.0%). Based on known source signatures
and our atmospheric measurements, we predict that the
mean kinetic isotope effect associated with sinks must be
small (24%). We further estimate that a total phaseout of
anthropogenic sources would likely change the
isotopic composition of atmospheric CH3Br by 24%,
and that this change would be difficult to detect with
current measurement techniques. IsoPrime 稳定同位素质谱仪
相关产品
相关解决方案
热门解决方案
最新解决方案
在线留言
官方微信

仪器网微信服务号

扫码获取最新信息


仪器网官方订阅号

扫码获取最新信息

在线客服

咨询客服

在线客服
工作日:  9:00-18:00
联系客服 企业专属客服
电话客服:  400-822-6768
工作日:  9:00-18:00
订阅商机

仪采招微信公众号

采购信息一键获取海量商机轻松掌控