Radionuclides monitoring in atmospheric aerosol samples in Xi’an

CHANG Yinzhong~1 WANG Xuhui~2 WANG Shilian~1 WANG Jun~1 1

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Radionuclides monitoring in atmospheric aerosol samples in Xi’an

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- Radionuclides monitoring in atmospheric aerosol samples in Xi’an
- NUCLEAR TECHNIQUES Issue 10, (2008)
- 作者机构：
  
  1. 禁核试北京国家数据中心和北京放射性核素实验室
  2. 西北核技术研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC： X831
- Published：01 October 2008
- 稿件说明：
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[1]常印忠,王旭辉,王世联,王军.西安地区大气环境气溶胶样品中放射性核素监测[J].核技术,2008(10):796-800.

CHANG Yinzhong~1 WANG Xuhui~2 WANG Shilian~1 WANG Jun~1 1. Radionuclides monitoring in atmospheric aerosol samples in Xi’an[J]. Nuclear techniques, 2008, (10): 796-800.
[1]常印忠,王旭辉,王世联,王军.西安地区大气环境气溶胶样品中放射性核素监测[J].核技术,2008(10):796-800. DOI：

CHANG Yinzhong~1 WANG Xuhui~2 WANG Shilian~1 WANG Jun~1 1. Radionuclides monitoring in atmospheric aerosol samples in Xi’an[J]. Nuclear techniques, 2008, (10): 796-800. DOI：

摘要

利用大流量气溶胶采样器和HPGeγ谱仪系统对西安大气气溶胶中放射性核素

Be、

212

Pb和

214

Pb进行了为期一年的采样监测。得到各核素年平均浓度分别为6.68×10

-3

Bq·m

-3

、0.65 Bq·m

-3

、16.06 Bq·m

-3

。

Be的浓度在春季较高

最高值为16.64×10

-3

Bq·m

-3

浓度变化有明显的季节性特征;

212

Pb和

214

Pb的浓度在冬季达到最大值1.71 Bq·m

-3

和50.11 Bq·m

-3

。浓度变化有显著的季节性特征。通过分析表明

降水是影响

Be、

212

Pb和

214

Pb浓度的主要因素

各核素的月平均浓度在降水量最大的八月达到最小值。监测过程中

未测到

137

Cs等人工放射性核素。

Abstract

The radioactivity concentrations of

212

Pb and

214

Pb in the atmosphere of Xi’an suburb were determined from April 2002 to April 2003.A high-volume air sampler and a high resolution gamma-ray spectrometer were used to measure the radioactivity.The annual average concentrations of

212

Pb and

214

Pb were 6.68×10

-3

Bq·m

-3

0.65 Bq/m

and 16.06 Bq·m

-3

respectively.The

Be levels were higher in spring than those in other seasons

with a maximum concentration of 16.64×10

-3

Bq·m

-3

.They reflected obvious seasonal trends.The concentrations of

212

Pb and

214

Pb have strong seasonal trends.The maximum concentrations were 1.71 Bq·m

-3

for

212

Pb and 50.11 Bq·m

-3

for

214

Pb in winter.Precipitation is a major factor affecting the concentrations of

212

Pb and

214

the monthly mean values reach minimum in August

when precipitation is the biggest of all the months.Artificial radionuclides

such as

137

have not been found.

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