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Updated: May 11, 2025

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

2011-2020年中国东部有机和元素碳气溶时间变化的特征

Yijia Zhuang¹, Tian Lin¹, Wanqing Zhou¹

¹College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China.

Journal of environmental sciences (China)

|April 17, 2025

概括

这项研究分析了从2011年到2020年在黄岛的碳变化. 有机碳 (OC) 和元素碳 (EC) 的含量因季节性和长期而波动,主要有机碳成分 (POC) 和二次有机碳成分 (SOC) 都发生了变化.

科学领域:

大气化学大气化学
环境科学环境科学
空气污染研究研究

背景情况:

总悬浮颗粒 (TSP) 含有各种碳状成分,包括有机碳 (OC) 和元素碳 (EC).
了解一次性有机碳 (POC) 和二次性有机碳 (SOC) 的时间变化和来源对于空气质量管理至关重要.
黄岛的地理位置使其成为监测东亚大气运输和沉积的关键地点.

研究的目的:

从2011年到2020年,全面分析2011年至2020年华岛OC,EC,POC和SOC的季节性和长期变化.
研究不同碳元素之间的时间趋势和相互关系.
根据POC和SOC的时间行为来确定POC和SOC的潜在来源和形成途径.

主要方法:

在十多年 (2011-2020年) 的时间里,在黄岛收集和分析总悬浮颗粒 (TSP).
有机碳 (OC),元素碳 (EC),初级有机碳 (POC) 和二级有机碳 (SOC) 度的量化.
统计分析以确定季节性变化,长期趋势和碳成分之间的相关性.

主要成果:

OC和EC度分别在2014年和2013年达到峰值,并在2017年达到最低水平.
欧共体和欧共体的度在冬季最高,夏季最低,在2014年冬季出现了显著的峰值.
到2020年,冬季OC和EC显著下降,而秋季度增加;OC4和EC1的比例下降,而OC3和OC2的比例增加.
在秋冬和冬春过渡期间观察到更高的POC和SOC,POC与OC2有很强的相关性,SOC与OC3有很强的相关性.

结论:

在黄岛观察到OC,EC,POC和SOC的显著季节性和长期变化.
碳成分比例的变化表明,在研究期间,排放源或大气处理发生了变化.
这些发现提供了对POC和SOC的来源和大气行为的洞察,这对于区域空气质量研究至关重要.

关键词:

气溶是一种气溶.东中国海是东中国海.经合组织/欧洲共同体.主要的有机碳主要有机碳.二次有机碳二次有机碳二次有机碳二次有机碳十年的时间,十年的时间.

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