Identifying Iron Foundries as a New Source of Unintentional Polychlorinated Naphthalenes and Characterizing Their Emission Profiles
文献类型：期刊论文
| 作者 | Liu, Guorui ; Lv, Pu ; Jiang, Xiaoxu ; Nie, Zhiqiang ; Zheng, Minghui |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 48期号:22页码:13165-13172 |
| ISSN号 | 0013-936X |
| 中文摘要 | Iron foundries have been identified as dioxin sources in previous field investigations. Similar formation mechanisms between dioxins and unintentional polychlorinated naphthalenes (PCNs) have led us to speculate that iron foundries are also potential PCN sources. In this study, PCNs in stack gas and fly ash samples representing atmospheric and residue emissions from 13 typical iron foundry plants were analyzed. The average emission factor of Sigma(2-8)PCNs to residue was calculated to be 61 mu g t(-1), with a range of 10-107 mu g t(-1). The emission factors of Sigma(2-8)PCNs to air in two case plants were 267 and 1472 mu g t(-1). The derived emission factors might be useful for estimating annual emissions and understanding the contribution of PCNs from iron foundries. The possible formation mechanisms of PCNs, based on the PCN profiles, are discussed. Successive reductions in the abundance of homologues were observed to occur with the increase in chlorine substituted numbers. Abundances of congeners containing more beta-position chlorines in the naphthalene skeleton were much higher than those of congeners containing more a-position chlorines for penta-, hexa-, and hepta- homologues, which suggests that the beta-positions are favored for chlorination. Potential chlorination pathways from tetra- to octa- homologues are proposed. |
| WOS记录号 | WOS:000345262900019 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9387]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Guorui,Lv, Pu,Jiang, Xiaoxu,et al. Identifying Iron Foundries as a New Source of Unintentional Polychlorinated Naphthalenes and Characterizing Their Emission Profiles[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(22):13165-13172. |
| APA | Liu, Guorui,Lv, Pu,Jiang, Xiaoxu,Nie, Zhiqiang,&Zheng, Minghui.(2014).Identifying Iron Foundries as a New Source of Unintentional Polychlorinated Naphthalenes and Characterizing Their Emission Profiles.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(22),13165-13172. |
| MLA | Liu, Guorui,et al."Identifying Iron Foundries as a New Source of Unintentional Polychlorinated Naphthalenes and Characterizing Their Emission Profiles".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.22(2014):13165-13172. |
入库方式： OAI收割
来源：生态环境研究中心
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