Characterization of trace elements of size-resolved particulate matter, development of emission factors and human health impacts associated with stationary diesel engine exhausts

IF 5.4 Q2 ENGINEERING, ENVIRONMENTAL
Vishnu Kumar, Sailesh Narayan Behera
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引用次数: 0

Abstract

The mass concentration of diesel particulate matter (DPM) and its elemental constituents (twenty-four) emitted from stationary diesel engine exhaust at ten different sizes (56 nm to 18 µm) increased with rise in engine-operating load. The maximum value of DPM concentration varied from 10.3 ± 2.4 mg/Nm3 at 0 % load to 20.4 ± 6.5 mg/Nm3 at 100 % load at size-bin of 0.10–0.18 μm. The elements of S, Ca, K, Al, Na, Mg, Fe, and Zn contributed as the major components to DPM mass with more than 90 % to total elements at six engine-operating loads. Ca, K, Al, Na, and Mg also showed higher values of EFs compared to Fe, Zn, As, Cr and Ni. Compared to Cu, Mn, Co, Se, Pb, Ba, Sr, fuel-based emission factor (EF) of Ti, Ga, Cd, Bi, and Te showed lower side of the estimated values. The levels of hazardous particulate elements generated from stationary diesel engine exhausts was a matter of concern from human health point of view as these elements showed better potential in causing significant cancer and non-cancer diseases through long-term exposure. The elements in DPM revealed significant deposition in the pulmonary and alveolar region of the human respiratory tract.

Abstract Image

与固定式柴油发动机废气相关的粒径分辨微粒物质痕量元素的表征、排放因子的开发和对人类健康的影响
固定式柴油发动机废气中排放的十种不同尺寸(56 nm 至 18 µm)的柴油微粒物质(DPM)及其元素成分(24 种)的质量浓度随着发动机运行负荷的增加而增加。在 0% 负载时,DPM 浓度的最大值为 10.3 ± 2.4 mg/Nm3,而在 100% 负载时,DPM 浓度的最大值为 20.4 ± 6.5 mg/Nm3,粒度范围为 0.10-0.18 μm。在六种发动机工作负荷下,S、Ca、K、Al、Na、Mg、Fe 和 Zn 元素是 DPM 质量的主要成分,占总元素的 90% 以上。与铁、锌、砷、铬和镍相比,钙、钾、铝、钠和镁的 EF 值也更高。与铜、锰、钴、硒、铅、钡、锶相比,基于燃料的钛、镓、镉、铋和碲的排放因子(EF)显示出较低的估计值。从人类健康的角度来看,固定式柴油发动机废气中产生的有害微粒元素水平令人担忧,因为这些元素显示出更大的潜力,通过长期接触可导致严重的癌症和非癌症疾病。柴油发动机废气中的这些元素显示会大量沉积在人体呼吸道的肺部和肺泡区域。
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来源期刊
Journal of hazardous materials advances
Journal of hazardous materials advances Environmental Engineering
CiteScore
4.80
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