کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6338162 | 1620361 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
4-Nitrophenol, 1-nitropyrene, and 9-nitroanthracene emissions in exhaust particles from diesel vehicles with different exhaust gas treatments
ترجمه فارسی عنوان
4-نیتروفنول، 1-نیوتوپیرن و انتشار 9-نیتراتانتراسن در ذرات اگزوز از وسایل نقلیه دیزلی با روش های مختلف احتراق گاز
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کلمات کلیدی
LNTDEPNSRVOCDPFPNPTD-GC/MSDOCPNOCPAH9-Nitroanthracene1-Nitropyrene - 1-نیتروپین3-Methyl-4-nitrophenol - 3-متیل-4-نیوتروفنل4-Nitrophenol - 4-نیتروفنولLC/MS - LC / MSNOx - NOXNitrogen oxides - اکسید نیتروژنVolatile organic compound - ترکیب آلی فرارlean NOx trap - تله NOx تیرهdiesel exhaust particle - دیزل اگزوز ذراتparticulate matter - ذرات معلقEmission factor - فاکتور انتشارDiesel particulate filter - فیلتر ذرات دیزلیNitro-PAH - نیترو-PAHnitrophenol - نیتروفنولhydrocarbon - هیدروکربنPolycyclic aromatic hydrocarbon - هیدروکربن آروماتیک چند حلقه ایdiesel oxidation catalyst - کاتالیزور اکسیداسیون دیزلNOx storage reduction - کاهش ذخیره سازی NOxSelective catalytic reduction - کاهش کاتالیزوری انتخابی یا کاهش کاتالیستی انتخابیOrganic carbon - کربن آلیelemental carbon - کربن عنصریLiquid chromatography/mass spectrometry - کروماتوگرافی مایع / طیف سنج جرمیtotal carbon - کل کربنSCR - یکسوساز کنترلشده با سیلیکون
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
چکیده انگلیسی
The dependence of nitro-organic compound emissions in automotive exhaust particles on the type of aftertreatment used was investigated. Three diesel vehicles with different aftertreatment systems (an oxidation catalyst, vehicle-DOC; a particulate matter and NOx reduction system, vehicle-DPNR; and a urea-based selective catalytic reduction system, vehicle-SCR) and a gasoline car with a three-way catalyst were tested. Nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) and nitrophenols in the particles emitted were analyzed by thermal desorption gas chromatography/mass spectrometry and liquid chromatography/mass spectrometry. The secondary production of nitro-organic compounds on the filters used to collect particles and the adsorption of gaseous nitro-organic compounds by the filters were evaluated. Emissions of 1-nitropyrene, 9-nitroanthracene, and 4-nitrophenol in the diesel exhaust particles were then quantified. The NOx reduction process in vehicle-DPNR appeared to remove nitro-hydrocarbons efficiently but not to remove nitro-oxygenated hydrocarbons efficiently. The nitro-PAH emission factors were lower for vehicle-DOC when it was not fitted with a catalyst than when it was fitted with a catalyst. The 4-nitrophenol emission factors were also lower for vehicle-DOC with a catalyst than vehicle-DOC without a catalyst, suggesting that the oxidation catalyst was a source of both nitro-PAHs and 4-nitrophenol. The time-resolved aerosol mass spectrometry data suggested that nitro-organic compounds are mainly produced when an engine is working under load. The presence of 4-nitrophenol in the particles was not confirmed statistically because of interference from gaseous 4-nitrophenol. Systematic errors in the estimated amounts of gaseous 1-nitropyrene and 9-nitroanthracene adsorbed onto the filters and the estimated amounts of volatile nitro-organic compounds that evaporated during sampling and during post-sampling conditioning could not be excluded. An analytical method in which all gaseous compounds are absorbed before particles are collected, and in which the volatile compounds are derivatized, would improve the precision and the accuracy of the data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 110, June 2015, Pages 93-102
Journal: Atmospheric Environment - Volume 110, June 2015, Pages 93-102
نویسندگان
Satoshi Inomata, Akihiro Fushimi, Kei Sato, Yuji Fujitani, Hiroyuki Yamada,