Taj Mahal, an iconic monument at Agra, India, is faced with the high air pollution levels, affecting its facade. A study was undertaken at the Taj Mahal (June 7–26, 2018) to measure PM_2.5, PM₁₀, TSP and their chemical composition: metals, ions, elemental and organic carbons and molecular markers (polyaromatic hydrocarbons, n-alkanes, hopanes and sterols). The objectives of the study were to (i) assess the contribution of sources to PM_2.5, PM₁₀ and TSP by employing receptor modelling (USEPA's Chemical Mass Balance model 8.2) and (ii) measure levels of reactive (NH₃, SO₂, NO₂), acidic (HCl, HNO₃) and corrosive (H₂S) gases.

The PM levels were: PM_2.5 65 ± 13; PM₁₀ 234 ± 84 and TSP 465 ± 204 μg/m³. The percent mass of metals (32–39) was the maximum in all PM size categories followed by secondary inorganic aerosol (SIA; 6–21). PM_2.5 had a substantial contribution to coal combustion and fly ash (35%), followed by vehicles (19%). The contribution of soil and road dust was maximum to PM₁₀ (39%) and TSP (61%), followed by the contribution of coal and fly ash in PM₁₀ (34%) and TSP (22%). The presence of HCl (9.44 ± 4.61 μg/m³) suggested the contribution of burning of coal, plastic, paper and waste. The other concern was levels of NH₃ (30 ± 14 μg/m³), which adds to the formation of SIA. The major source of NH₃ could be from the upstream discharges of partially treated sewage in the River Yamuna, flowing adjacent to the Taj Mahal.

泰姬陵是印度阿格拉的标志性古迹，面临着高空气污染水平，影响了其外墙。在泰姬陵（2018年6月7日至26日）进行了一项研究，以测量PM _2.5， PM ₁₀，TSP及其化学成分：金属，离子，元素和有机碳以及分子标记（聚芳烃，正构烷烃，ane烷）和固醇）。该研究的目的是（i）通过采用受体模型（USEPA的化学物质平衡模型8.2 ）评估源对PM _2.5， PM ₁₀和TSP的贡献，以及（ii）测量反应性（NH ₃，SO ₂， NO ₂），酸性（HCl，HNO ₃）和腐蚀性（H ₂S）气体。

PM水平为：PM _2.5 65±13；PM ₁₀ 234±84和TSP 465±204μg/ m ³。在所有PM尺寸类别中，金属的质量百分比（32-39）最大，其次是次要无机气溶胶（SIA; 6-21）。PM _2.5对燃煤和粉煤灰有重要贡献（35％），其次是车辆（19％）。土壤和道路灰尘对PM ₁₀（39％）和TSP（61％）的贡献最大，其次是PM ₁₀（34％）和TSP（22％）的煤和粉煤灰的贡献。HCl（9.44±4.61μg/ m ³）的存在表明煤，塑料，纸张和废物的燃烧。另一个问题是NH ₃（30±14μg/ m³），这增加了SIA的形成。NH ₃的主要来源可能是从Yamuna河中流向毗邻泰姬陵的部分污水的上游排放。