Delhi PM 2.5 chemical composition data

Long term PM 2.5 chemical composition data for Delhi. WSOC values are based on Kirillova et al. 2014 ratio of WSOC to OC. Day and night filter paper samples were collected and subsequently analyzed on Ion Chromatograph for ions and OC/EC analyzer for OC and EC.印度德里地区长期PM2.5化学成分观测数据集。其中水溶性有机碳（Water-Soluble Organic Carbon, WSOC）数值基于Kirillova等人2014年提出的WSOC与有机碳（Organic Carbon, OC）的比值关系。本数据集采集了昼夜滤膜样品，随后通过离子色谱仪（Ion Chromatograph）对样品中的离子组分开展分析，并使用有机碳/元素碳分析仪（OC/EC Analyzer）测定了OC与元素碳（Elemental Carbon, EC）的含量。