Development of simple and accurate assessment method on air pollution with persistent organo-pollutants
开发简单准确的持久性有机污染物空气污染评估方法
基本信息
- 批准号:12480168
- 负责人:
- 金额:$ 4.86万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2000
- 资助国家:日本
- 起止时间:2000 至 2001
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We obtained 2,0 ambient air samples of continuous 7days collecting during a period of July of 2000 to November of 2001 on the campus of Setsunan University, Hirakata, Osaka, Japan, using a newly developed low-volume air sampler with the flow rate of 40 L/min. These air samples were all analyzed for dioxin analogues including polychlorinated dibenzo-p-dioxins (PCDDS), polychlorinated dibenzofurans (PCDFs) and coplanar PCBS (Co-PCBs) using our developed analytical method, which was essentially composing of an addition of 13C-laveled internal standards, extraction with toluene or ace tone under reflux, refined by multi-layer silica gel column chromatography and alumina column chromatography and analysis for dioxin analogues in EI-SIM mode at a high resolution gas chromatograph -mass spectrometer (GC/MS). Consequently, it was first revealed that the air pollution level with dioxin analogues was rather higher during a period of spring to summer seasons and was lower duri ng of winter season … More . This phenomenon was completely contrary to many data previously reported by many researchers, all of which were derived from limited analytical data such as several times per year. In addition, it was made clear that the weekly alteration of air pollution was considerably large with a level of maximum/minimum ratio of ca. 6 throughout this experiment time.On the other hand, Japanese pine needle samples collected weekly during this experimental period. The gas phase of dioxin analogues in the air was confirmed to mainly accumulate in the pine needle. In addition, the accumulation level was also made clearly to have a good positive correlation with an increase of needle age.From these results, we produced a simple assessment formula of air pollution level of dioxin analogues on the basis of the analytical data of pine needle. The method application for three areas i n Osaka Prefecture, central Japan gave a good result.In the meanwhile, a joint research of our group and Environmental General Institute, Tokyo was also made clear that the bio-monitoring data by pine needle as an indicator of dioxin analogues in th e air agreed with the simulation result of air pollution by computer, indicating the bio-nionitoring to insist a suitable technique for assessment of air pollution with dioxin analogues.Furthermore, we revealed the existence state of persistent organo-pollutans including DDT analogues, HCH analogues, chlordane and hexachlorobenzene in the air through the analytical data of air samples collected by the low-volume air sampler, showing the majority of these pollutants to be present as a gas phase. Less
采用新研制的小流量空气采样器,于2000年7月至2001年11月在日本大阪平方雪山大学校园内连续采集了7天的环境空气样品2,0份,采样率为40 L/分。使用我们开发的分析方法分析了这些空气样本中的二恶英类似物,包括多氯二苯并-对二恶英(PCDDs)、多氯二苯并呋喃(PCDFS)和共面多氯联苯(Co-PCbs)。分析方法主要包括添加13C内标,回流提取甲苯或乙酸乙酯,经多层硅胶柱和氧化铝柱层析精制,并在高分辨率气相色谱-质谱仪(GC/MS)上以EI-SIM模式分析二恶英类似物。首次揭示了二恶英类似物在春季至夏季的空气污染水平较高,而在冬季…期间空气污染水平较低更多。这一现象与许多研究人员以前报告的许多数据完全相反,所有这些数据都是从有限的分析数据得出的,例如每年几次。此外,在整个实验期间,空气污染的周变化相当大,最大/最小比值约为6。另一方面,在本实验期间,每周采集的松针样本。空气中二恶英类似物的气相主要积累在松针中。此外,还明确了积累量与针龄的增加有很好的正相关关系,根据这些结果,我们根据松针的分析数据,得出了一个简单的二恶英类似物空气污染水平的评估公式。方法在日本中部大阪府三个地区的应用取得了良好的效果。同时,本课题组与东京环境综合研究所的联合研究也表明,松针作为空气中二恶英类似物指标的生物监测数据与计算机模拟空气污染的结果一致,表明生物监测坚持一种适合于二恶英类似物空气污染评价的技术。此外,通过小流量空气采样器采集的空气样品分析数据,揭示了空气中DDT类似物、六六六类似物、氯丹和六氯苯等持久性有机污染物的存在状态显示大多数这些污染物以气相形式存在。较少
项目成果
期刊论文数量(46)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
H Miyata. et al.: "Organohalogen Compounds"Correlation of dioxin analogues concentrations between ambient air and pine needle in Japan 2. 51. 88-91 (2001)
H 宫田.
- DOI:
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- 通讯作者:
H Miyata. et al.: "Accurate evaluation of air pollution by dioxin analogues using a newly developed low-volume airasampler"Organohalogen Compounds. 50. 213-216 (2001)
H 宫田.
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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- 通讯作者:
O.Aozasa, S.Ohta, T.Nakao, H.Miyata et al.: "Enhancement in fecal excretion of dioxin isomer in mice by several dietary fibers"CHEMOSPHERE. 45. 195-200 (2001)
O.Aozasa、S.Ohta、T.Nakao、H.Miyata 等人:“通过几种膳食纤维增强小鼠二恶英异构体的粪便排泄”CHEMOSPHERE。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
H.Miyata et al.: "Accurate evaluation of air pollution by dioxin analogues using a newly developed low-volume air sampler"ORGANOHALOGEN COMPOUNDS. 50. 213-220 (2001)
H.Miyata 等人:“使用新开发的低容量空气采样器准确评估二恶英类似物造成的空气污染”有机卤素化合物。
- DOI:
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- 影响因子:0
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H Miyata. et al.: "Investigation on assessment of air pollution by dioxin analogues usi ng Japanese black pine needle as an indicator"Organohalogen Compounds. 46. 373-376 (2000)
H 宫田.
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