Levels of suspended particulate matter (PM) of both fractions PM₁₀ and PM_2.5 in ambient air were monitored in three areas of Gran La Plata: industrial, urban, and residential (2017–2019). Associated polycyclic aromatic hydrocarbons (PAHs) and nitropolycyclic aromatic hydrocarbons (NPAHs) to PM were also determined and possible emission sources were identified. Assessment of health risk to PM exposure and associated compounds was realized. Results showed a decrease in levels of PM₁₀ in each area along the period studied, especially in the industrial area. Decreases in PM_2.5 levels were also observed in urban and residential areas over the years, although the trend is not as marked as with PM₁₀ levels. Then, PM_2.5 levels in the industrial area have remained practically constant. The 89% of both PM₁₀ and PM_2.5 annual mean exceeds the WHO reference values. The presence of most of the 16 US EPA priority PAHs studied was found with a detection frequency greater than 60% and it was possible to identify the importance of the contributions of vehicular emissions as predominant sources of PAH emission. From the calculations of the risk of contracting cancer throughout life (LCR), in the case of adults, the US EPA limits were not complied in the industrial and urban areas and in both fractions of PM. From the evaluation of the burden of disease (EBD), the calculated relative risks of mortality were very similar for the studied districts, being the relative risk in La Plata slightly lower, about 3–5%, than those in Berisso and Ensenada.

在大拉普拉塔的三个地区（工业，城市和住宅）（2017-2019年）监测了环境空气中PM ₁₀和PM _2.5两种组分的悬浮颗粒物（PM）含量。还确定了与PM相关的多环芳烃（PAH）和硝基多环芳烃（NPAH），并确定了可能的排放源。评估了PM暴露及其相关化合物的健康风险。结果显示，在整个研究期间，每个区域的PM ₁₀含量均下降，特别是在工业领域。多年来，尽管在城市和住宅区，PM _2.5的水平也有所下降，但趋势并不像PM ₁₀那样明显。水平。然后，工业区的PM _2.5含量实际上保持不变。PM ₁₀和PM _2.5的89％年均值超过了WHO参考值。发现研究的16种美国EPA优先PAH中大多数都存在，其检出频率大于60％，并且有可能确定车辆排放作为PAH排放的主要来源的重要性。根据对终生罹患癌症的风险（LCR）的计算，对于成年人来说，在工业和城市地区以及PM的两个部分中均未遵守美国EPA的限值。通过对疾病负担（EBD）的评估，所研究地区的死亡相对危险度非常相似，拉普拉塔地区的相对危险度比贝里索和恩塞纳达略低，约为3-5％。