This study aims to determine the concentrations of the trace metals (TM) and water soluble inorganic ions (WSII) of the PM_2.5 pollutant collected in the suburban industrial-residential airshed during the southwest (SW), inter-monsoon (IM) and northeast (NE) monsoons in Skudai, Johor Bahru. The PM_2.5 samples were collected using the MiniVol™ portable air sampler equipped with filter paper. The TM and WSII of PM_2.5 were determined by using the inductively coupled plasma-mass spectrometry (ICP-MS) and ion chromatography (IC), respectively. The sources of the PM_2.5 composition were determined using the Positive Matrix factorisation (PMF) and the origin of the measured air-masses were determined by the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT). The results show that the major TM identified were Fe > Ba > Zn > Mg > Al. Meanwhile for the WSII, the major contributor was the secondary inorganic aerosols (SIA); NO₃⁻, SO₄²⁻ and NH₄⁺. The six predominant sources identified were (1) mineral dust pollution (4.2%), (2) source of mixed road dust and biomass burning (18.1%), (3) mixed secondary inorganic aerosol and road dust emission (18.1%), (4) emission of the non-combustion traffic source (25.4%), (5) industrial emission (18.1%) and (6) undefined (16.1%).

本研究旨在确定西南 (SW)、季风间 (IM) 和东北地区郊区工业住宅空气域收集的 PM _2.5污染物中痕量金属 (TM) 和水溶性无机离子 (WSII) 的浓度。(NE) 新山士姑来的季风。PM _2.5样品是使用配备滤纸的 MiniVol™ 便携式空气采样器收集的。PM _2.5的 TM 和 WSII分别使用电感耦合等离子体质谱法 (ICP-MS) 和离子色谱法 (IC) 测定。PM _2.5的来源使用正矩阵分解 (PMF) 确定组成，并通过混合单粒子拉格朗日综合轨迹 (HYSPLIT) 确定测量空气质量的来源。结果表明，鉴定的主要 TM 为 Fe > Ba > Zn > Mg > Al。同时对于WS​​II，主要贡献者是二次无机气溶胶（SIA）；NO ₃ ^-、SO ₄ ^2-和NH ₄ ⁺。确定的六个主要来源是（1）矿物粉尘污染（4.2％），（2）混合道路粉尘和生物质燃烧的来源（18.1％），（3）混合二次无机气溶胶和道路粉尘排放（18.1％），（ 4）非燃烧交通源排放（25.4%），（5）工业排放（18.1%）和（6）未定义（16.1%）。