生态环境学报
生態環境學報
생태배경학보
ECOLOGY AND ENVIRONMENT
2013年
12期
1916-1921
,共6页
PM10%PAHs%来源解析%CMB
PM10%PAHs%來源解析%CMB
PM10%PAHs%래원해석%CMB
PM10%PAHs%source apportionment%CMB
采用化学质量平衡模型(CMB)对徐州市大气颗粒物中的多环芳烃(PAHs)进行来源分析,从而来确定各个源对大气的PAHs贡献值。主要通过利用大流量采样器配置PM10切割头在冬季和夏季对不同功能区,即生活区、工业区和旅游区采样大气中的可吸入颗粒物(PM10)样品,并用高效液相色谱法(HPLC)重点分析和研究了美国环保局(EPA)列出的16种PHAS优先污染物。研究结果表明:徐州市PM10污染比较严重,PM10污染质量浓度水平冬季是(288.81μg·m-3)大于夏季(276.34μg·m-3),特别是工业区,污染数值达到393.13μg·m-3。夏季的总PAHs质量浓度为22.89 ng·m-3,分别是生活区28.35 ng·m-3、工业区21.75 ng·m-3和旅游区18.58 ng·m-3。冬季的总PAHs质量浓度为306.29 ng·m-3,分别是工业区388.03 ng·m-3、生活区276.29 ng·m-3和旅游区254.28 ng·m-3。夏季和冬季情况下,旅游区的污染相对来说都是最低的PM10中多环芳烃的源解析结果为,煤烟尘污染源的全年贡献率为64.00%,冬季煤烟尘污染源的贡献率为66.51%,夏季煤烟尘污染源的贡献率为57.21%,说明煤烟尘是PM10中多环芳烃的主要贡献源,土壤尘次之,全年贡献率为24.90%,冬季为25.48%,夏季为28.97%,因此,扬尘和烟煤尘的污染是徐州市的PM10中PAHs的最主要来源。
採用化學質量平衡模型(CMB)對徐州市大氣顆粒物中的多環芳烴(PAHs)進行來源分析,從而來確定各箇源對大氣的PAHs貢獻值。主要通過利用大流量採樣器配置PM10切割頭在鼕季和夏季對不同功能區,即生活區、工業區和旅遊區採樣大氣中的可吸入顆粒物(PM10)樣品,併用高效液相色譜法(HPLC)重點分析和研究瞭美國環保跼(EPA)列齣的16種PHAS優先汙染物。研究結果錶明:徐州市PM10汙染比較嚴重,PM10汙染質量濃度水平鼕季是(288.81μg·m-3)大于夏季(276.34μg·m-3),特彆是工業區,汙染數值達到393.13μg·m-3。夏季的總PAHs質量濃度為22.89 ng·m-3,分彆是生活區28.35 ng·m-3、工業區21.75 ng·m-3和旅遊區18.58 ng·m-3。鼕季的總PAHs質量濃度為306.29 ng·m-3,分彆是工業區388.03 ng·m-3、生活區276.29 ng·m-3和旅遊區254.28 ng·m-3。夏季和鼕季情況下,旅遊區的汙染相對來說都是最低的PM10中多環芳烴的源解析結果為,煤煙塵汙染源的全年貢獻率為64.00%,鼕季煤煙塵汙染源的貢獻率為66.51%,夏季煤煙塵汙染源的貢獻率為57.21%,說明煤煙塵是PM10中多環芳烴的主要貢獻源,土壤塵次之,全年貢獻率為24.90%,鼕季為25.48%,夏季為28.97%,因此,颺塵和煙煤塵的汙染是徐州市的PM10中PAHs的最主要來源。
채용화학질량평형모형(CMB)대서주시대기과립물중적다배방경(PAHs)진행래원분석,종이래학정각개원대대기적PAHs공헌치。주요통과이용대류량채양기배치PM10절할두재동계화하계대불동공능구,즉생활구、공업구화여유구채양대기중적가흡입과립물(PM10)양품,병용고효액상색보법(HPLC)중점분석화연구료미국배보국(EPA)렬출적16충PHAS우선오염물。연구결과표명:서주시PM10오염비교엄중,PM10오염질량농도수평동계시(288.81μg·m-3)대우하계(276.34μg·m-3),특별시공업구,오염수치체도393.13μg·m-3。하계적총PAHs질량농도위22.89 ng·m-3,분별시생활구28.35 ng·m-3、공업구21.75 ng·m-3화여유구18.58 ng·m-3。동계적총PAHs질량농도위306.29 ng·m-3,분별시공업구388.03 ng·m-3、생활구276.29 ng·m-3화여유구254.28 ng·m-3。하계화동계정황하,여유구적오염상대래설도시최저적PM10중다배방경적원해석결과위,매연진오염원적전년공헌솔위64.00%,동계매연진오염원적공헌솔위66.51%,하계매연진오염원적공헌솔위57.21%,설명매연진시PM10중다배방경적주요공헌원,토양진차지,전년공헌솔위24.90%,동계위25.48%,하계위28.97%,인차,양진화연매진적오염시서주시적PM10중PAHs적최주요래원。
CMB receptor model was used to calculate the source apportionment of PAHs in the particulate matter (PM), and to determine the contribution value of different sources. We used the high-volume air sampler to collect the winter and summer PM10 samples from three districts-living area, industry area and tourism area, and also used HPLC method to analysis the 16 kinds of PAHs. The results show that the PM10 pollution of Xuzhou is serious and the concentration is 288.81μg·m-3 in winter and 276.34μg·m-3, especially in the industry area, the concentration is 393.13μg·m-3. The concentration of total PAHs in winter (306.29 ng·m-3) is almost 15 times than the concentration in summer (22.89 ng·m-3). According to the CMB model, coal combustion contributed 64%of total PAHs, 66.51%in winter and 57.21%in summer, which means the coal combustion is the most important source in Xuzhou, the second source is soil dust, which account for 24.90%. Results of source apportionment show that dust and coal burnning are the major sources of PAHs in PM10.