The project started on Aug 26th, 2015, which includes FTIR monitoring, offshore island industrial zones (in the factory), and Yunlin area near the industrial zones and away from the industrial area (outside the factory) for pollutant monitoring works. The pollutants include volatile contaminants (VOCs), PM2.5, and metal elements. Through the effective implementation of this plan, it can grasp the offshore island industrial zone preceding the sources of pollution, establish background of concentrations for the key site of industrial zone, and then clarify the impact from the Yunlin area offshore island industrial zones. The outcome of projects as follows:
I. The completion of FTIR monitoring in 390 times.
1. Nan-Man and Shu-Tzu measuring line often measured species are ethylene, propylene. When the wind direction was from the north to northeasterly angle, and more easily measured the high value.
2. The species of exceeding odor threshold：Nan-Man measuring line is butanone and ethanol; Shu-Tzu measuring line is ammonia and ethanol.
II. The completion of sampling and analysis for volatile organic gases in 56 times.
i. The first sampling period: Sep 24th, 2015 - Sep 25th, 2015
Detection 8 measuring points had measured acetone and methanol, they were the kinds of common air pollutants. Measuring points outside of the factory as Lunfeng elementary school and Sihu junior high school had measured the highest quantities of 5 species, and the concentration of Lunfeng was relatively higher, which was the highest concentration of methanol (18.9 ppb).Three measuring points in the factory which VCM plant had measured more species as 9. The measuring point had measuresd main species were alkyl compounds, which was the highest concentration of methanol (14.3 ppb); K8400 measuring point had measuresd species as 8, which was the highest concentration of methanol as 13.4 ppb.
ii. The second sampling period: Oct 7th, 2015 - Oct 8th, 2015
Detection 8 measuring points had measured acetone and methanol , measuring points outside of the factory as Fengan elementary school and Lunbei junior high school had measured 7 species, and the concentration of methanol (30.9 ppb) and acetone (11.4 ppb) of Fengan was the highest. The concentrations of acetone at other measuring points were less than 10 ppb; K8400 and AROMA-2 in factory area had measured 9 species, but the concentrations of acetone (14.9 ppb) of VCM plant was the highest, and the concentration of methanol (20.8 ppb) of K8400 was the highest.
iii. The third sampling period: Dec 15th, 2015 - Dec 16th, 2015
Detection 8 measuring points had measured propane, chloromethane, acetone, methanol, toluene and isobutane, measuring points outside of the factory as Xinxing elementary school and Lunbei junior high school had measured 7 species, and the concentration of methanol (17.6 ppb) of Fengan was the highest . AROMA-2 in factory area had measured 8 species, but the concentrations of acetone (13.7 ppb) of VCM plant was the highest, and the concentration of methanol (142.0 ppb) of K8400 was the highest.
iv. The fourth sampling period: Jan 14th, 2016 - Jan 15th, 2016
Detection 8 measuring points had measured propane, acetone, methanol, toluene, n-butane and isobutane, measuring points outside of the factory had measured 7 species, and the concentration of methanol (34.4 ppb) of Fengan elementary school was the highest; the VCM plant had measured 10 species, and the concentration of acetone (40.5 ppb) was the highest. The concentration of methanol (142.0 ppb) of K8400 was the highest.
v. The fifth sampling period: Mar 17th, 2016 - Mar 18th, 2016
Detection 8 measuring points had measured propane, methanol, acetone, toluene, n-butane and isobutane, measuring points outside of the factory as Fengan and Xinxing elementary school had measured 6 species, and the concentration of toluene (8.10 ppb) of Fengan elementary school was the highest; AROMA-2 in factory area had measured 9 species and the species of each measuring points were a little difference in factory area.
vi. The sixth sampling period: May 26th, 2016 - May 27th, 2016
Detection 8 measuring points had measured acetone except Xinxing elementary school. Measuring points outside of the factory as Fengan and Lunbei elementary school had measured 2 species, the concertration of measuring points outside of the factory were a little difference. The K8400 in factory area had measured 13 species, and the concentration of isopentane (28.0 ppb) was the highest.
vii. The seventh sampling period: Jun 27th, 2016 - Jun 28th, 2016
Detection 6 measuring points had measured methanol and acetone, measuring points outside of the factory as Xinxing elementary school had measured 5 species, and it was the most species. The concentration of measuring points outside of the factory were a little difference. The K8400 in factory area had measured 25 species, and the concentration of isopentane (86.5 ppb) was the highest.
III. The completion of relative analysis of particulate matter in 90 times
The average concentration of PM2.5, at first test in the day-time(in offshore industrial zone) was the hightest followed by short-distance, mid-distance (near industrial zone), and long-distance (away from industrial zone). In the night time, due to the impact of northeast wind, the highest in mid-distance, short-distance, and the lowest in long-distance; At second test, day-night concentration was the highest followed by long-distance, mid-distance, and the lowest in short-distance due to strong northeast wind brought the pollution of inland or proximity; At third test, day-night concentration was the highest followed by long-distance, mid-distance, and the lowest in short-distance due to southwesterly airstream brought the pollution of inland or proximity.
According to the concentration of PAHs among PM2.5, at the first and second test mid-distance and short-distance presented higher values than long-distance which showed the short and mid still affected by the industrial emissions. The concentration at night was rendered higher than the day. It may be the wind speed lower at night than day, thus PAHs easily attached to PM2.5, leading to the higher concentration at night. At the third test, day-time concentration was the highest followed by long-distance, short-distance, and the lowest in mid-distance due to southwesterly airstream.
The concentration of total metal in PM2.5, the first test, the concentration of day and night were the highest equally followed by short-distance, mid-distance and long-distance was the lowest. At day time, the concentration of these three distances were higher than at night. It reveals that human activities affected concentration of metal in PM2.5. The second test, the concentration of metal both day and night were the highest followed by long-distance, mid-distance and the lowest were short-distance. The wind speed of short-distance was higher than the other two areas which resulting in the formation of PM2.5 were not easy to gather. The low concentrations of PM2.5 had resulted in its low metal concentrations. The third test, the concentration of metal in day-time was the highest followed by long-distance, mid-distance and the lowest were short-distance due to southwest wind brought the short-distance pollution to the long-distance.
The concentration of sulfate ion in PM2.5, the most was sulfate of total ion during day and night and followed by ammonium ion. Due to the main source of sulfate was from fossil fuel combustion, mostly formed by the derivative salts, such as combustion of heavy oil or coal-fired power boilers, etc., thus the proportion of the daytime was higher than at night.
The concentration of total carbon in PM2.5, the first detection of short-distance and long-distance were higher than long-distance and daytime higher at night. It showed that industrial areas and human activities contribute to concentration of carbon in PM2.5; the second detection of long-distance was the highest, mid-distance and the lowest short-distance because the northeast monsoon affected. The industrial area and the proximity of pollution sources inland were brought by the wind and to mid-distance and long-distance, so long-distance was the higher concentration. The third detection of long-distance was the highest, short-distance and the mid-distance was lowest because the short-distance and inland affected.
The concentration of gaseous PAHs, the first test, concentration at day for the short and mid-distance were higher than long-distance. It reveals short-distance area may be affected by industrial sources at day; the second test, the concentration of the lowest was short-distance. It reveals wind speed of short-distance was higher than the other two areas; The third test, the concentration at day-night were the highest followed by long-distance, mid-distance and the lowest were short-distance. It reveals the southwesterly airstream affected the gaseous PAHs transmitted by the short-distance to the mid-distance and long-distance.
