Examination About Availability of Rapid Analysis Methodology of Polyaromatic Hydrocarbons (PAHs) in Automotive Exhaust Emissions

2005 ◽  
Author(s):  
Hiroyuki Koyama ◽  
Hirotaka Kanno ◽  
Yasunori Iwakiri
Keyword(s):  
Polyaromatic Hydrocarbons ◽  
Exhaust Emissions ◽  
Rapid Analysis ◽  
Automotive Exhaust ◽  
Analysis Methodology

scholarly journals Estimation of Vessel Emissions Inventory in Qingdao Port Based on Big data Analysis

Symmetry ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 452 ◽  
Author(s):  
Xing Sun ◽  
Zhe Tian ◽  
Reza Malekian ◽  
Zhixiong Li
Keyword(s):  
Pollution Prevention ◽  
Exhaust Emissions ◽  
Control Measures ◽  
Emissions Inventory ◽  
Cargo Handling ◽  
Analysis Methodology ◽  
Marine Transport ◽  
Current Emission ◽  
Oil Tankers ◽  
Trade Market

Exhaust emissions from vessels have increasingly attracted attention in the continuously growing marine transport world trade market. The International Maritime Organization (IMO) has introduced a number of measures designed to reduce exhaust emissions from global shipping. As one of the busiest ports in the world, Qingdao port has been studied to propose possible support to the development of efficient emission reduction. In this study, a large amount data of emissions inventory in Qingdao port was used to predict its annual exhaust emissions, and hence, to help understand maritime pollution in Qingdao port. Bigdata analysis methodology was employed to perform accurate predictions on vessel emissions. The analysis results show that the emissions were dominated by container ships, oil tankers, and bulk cargo ships. The comparison between Qingdao port and other ports in emission control areas demonstrates the necessity of control measures for exhaust emissions. The adoption of shore power and efficient cargo handling seems to be a potential solution to reduce exhaust emissions. The findings of this study are meaningful for maritime safety administration to understand the current emission situation in Qingdao port, propose corresponding control measures, and perform pollution prevention.

A new two-stage separation procedure for the IDMS based quantification of low Pd and Pt amounts in automotive exhaust emissions

2015 ◽  
Vol 30 (2) ◽  
pp. 479-486 ◽  
Author(s):  
Jochen Vogl ◽  
Christian Meyer ◽  
Maren Koenig ◽  
Dorit Becker ◽  
Janine Noordmann ◽  
...  
Keyword(s):  
Exhaust Emissions ◽  
Separation Procedure ◽  
Automotive Exhaust ◽  
Two Stage ◽  
Effective Separation ◽  
Stage Separation

A two-step separation procedure for the IDMS-analysis of Pd and Pt was developed enabling effective separation from interfering elements.

scholarly journals Transient Characterization of Automotive Exhaust Emission from Different Vehicle Types Based on On-Road Measurements

Atmosphere ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 64 ◽  
Author(s):  
Chao Ma ◽  
Lin Wu ◽  
Hong-jun Mao ◽  
Xiao-zhen Fang ◽  
Ning Wei ◽  
...  
Keyword(s):  
High Speed ◽  
Exhaust Emissions ◽  
Particulate Filter ◽  
Specific Power ◽  
Vehicle Emission ◽  
Emission Rates ◽  
Automotive Exhaust ◽  
Nucleation Mode ◽  
Medium Speed ◽  
High Emission

Previous works on real-world vehicle emission characteristics have mainly focused on the influences of fuel, speed, vehicle type, elevation, and other factors on vehicle emission quantity and components. However, few studies have investigated the transient trend of automotive exhaust emissions through on-road measurements. The key objective of the present paper was to examine the transient characteristics of exhaust emissions from different vehicle types on the roads of Tianjin. To achieve the goal, a portable emission measurement system (PEMS) was employed to monitor emissions from selected test vehicles—private cars, passenger vehicles, and cargo vehicles. It was found that the high-emission points of test vehicles were mainly distributed in two regions: the high-speed region (speed > 70–90 km/h, vehicle-specific power (VSP) > 0 kW/t) and the medium-speed–acceleration region (20–30 km/h < speed < 60–90 km/h, 0 kW/t <VSP < 12 kW/t). The CO, hydrocarbon (HC), NOx, and particulate number (PN) average emission rates in the high-emission points could be 3.15–14.93 times, 1.93–24.89 times, 3.23–6.03 times, and 3.22–30.27 times of those of average emission rates. The HC, NOx, and PN average emission rates of China IV vehicles in the high-emission points were 2.46–4.92 times, 3.56–6.03 times, and 3.22–13.21 times of those of average emission rates, not less than those of China III (1.93–2.52 times, 2.75–3.90 times, and 9.98–22.34 times). Test vehicles mainly emitted nucleation-mode and Aitken-mode particles, and the increase of the PN concentration emission rate in low-speed and high-speed regions was higher than that in the medium-speed region. The exhaust gas recirculation (EGR) + diesel particulate filter (DPF) could effectively inhibit the Aitken output caused by turbocharged intercooler (CIC). The selective catalytic reduction (SCR) might cause more nucleation-mode particles.

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