Carbonaceous components [organic carbon (OC), elemental carbon (EC), water soluble organic carbon (WSOC), primary organic carbon (POC), secondary organic carbon (SOC) and carbonaceous aerosols (CAs)] and major and trace elements (Na, Mg, Ca, Al, Fe, Ti, Cl, P, S, K, Cr, Ni, Cu, Zn, Mo and B) of PM₁₀ were studied over the eastern Himalayan high altitude station [Darjeeling: 27.01°N and 88.15°E, 2200 m average mean sea level (amsl)] during winter 2018–19 (December 2018–February 2019). The carbonaceous aerosols/species (CAs) contributed to ~23% of PM₁₀ mass concentration, whereas major and trace elements accounted for 10% of PM₁₀. During the entire study period, the average concentrations of PM₁₀, OC, EC, WSOC, POC, SOC and CAs were recorded as 48 ± 16 μg m⁻³, 5.39 ± 1.84 μg m⁻³, 2.60 ± 0.94 μg m⁻³, 3.87 ± 1.18 μg m⁻³, 3.40 ± 1.23 μg m⁻³, 1.99 ± 1.03 μg m⁻³ and 11.21 ± 3.78 μg m⁻³, respectively. Significant positive correlation between OC & EC and OC & WSOC have been observed which are indicating their common sources. WSOC/OC ratio was estimated to be 0.71 suggesting that the biomass burning is one of the major sources of carbonaceous aerosols at Darjeeling during winter. The significant positive correlation of PM₁₀ with crustal elements (Al, Fe, Ca, Mg and Ti) as well as the correlation of Al with other crustal elements (Fe, Ca, Mg and Ti) indicates the abundance of mineral dust at the sampling site. Principal component analysis (PCA) identified the contribution of crustal/soil dust, biomass + coal burning, vehicular emissions and solid waste to the PM₁₀ over the eastern Himalayan region of India.

碳质成分[有机碳（OC），元素碳（EC），水溶性有机碳（WSOC），一次有机碳（POC），二次有机碳（SOC）和碳质气溶胶（CAs）]和主要和微量元素（Na ，镁，钙，铝，铁，钛，氯，P，S，K，铬，镍，铜，锌，PM的Mo和B）₁₀进行了研究以上东喜马拉雅高空站[大吉岭：27.01°N和88–15°E，2018–19冬季（2018年12月至2019年2月）平均海平面2200 m]。碳质气溶胶/物质（CAs）占PM ₁₀质量浓度的〜23％，而主要和微量元素占PM _10的10％。在整个研究期间，PM ₁₀的平均浓度，OC，EC，WSOC，POC，SOC和CA的记录为48±16微克米^-3，5.39±1.84微克米^-3，2.60±0.94微克米^-3，3.87±1.18微克米^-3，3.40±1.23 μgm ^-3，分别为1.99±1.03μgm ^-3和11.21±3.78μgm ^-3。已观察到OC＆EC和OC＆WSOC之间存在显着的正相关关系，这表明它们是共同的来源。WSOC / OC比估计为0.71，表明在大吉岭冬季，生物质燃烧是碳质气溶胶的主要来源之一。PM ₁₀的显着正相关与地壳元素（Al，Fe，Ca，Mg和Ti）的关系以及Al与其他地壳元素（Fe，Ca，Mg和Ti）的相关性表明采样点处的矿物粉尘丰富。主成分分析（PCA）确定了印度喜马拉雅东部地区地壳/土壤粉尘，生物质+燃煤，车辆排放物和固体废物对PM ₁₀的贡献。