東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

The fate, tranformation and persiste...

Mina, Odette.

FindBook

Google Book

Amazon

博客來

The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation./
作者:	Mina, Odette.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	201 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.
Contained By:	Dissertation Abstracts International78-04B(E).
標題:	Agricultural engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10297064
ISBN:	9781369404661

The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation.
Mina, Odette.

The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 201 p.

Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.

Thesis (Ph.D.)--The Pennsylvania State University, 2016.

The presence of emerging contaminants (ECs) in the environment has become a great concern in recent years. Many ECs are known to be endocrine disrupting compounds (EDCs) and they include natural estrogens and synthetic estrogens, which have been detected in surface waters worldwide. Effluent discharged to downstream water bodies from wastewater treatment plants, and surface runoff from manure-amended fields, are two important pathways of estrogens into the environment. In order to manage these wastes in a sustainable manner, more research is needed to understand the impacts of land application activities on water quality and contaminant fate and transport.

ISBN: 9781369404661Subjects--Topical Terms:

3168406
Agricultural engineering.

The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation.
LDR:05587nmm a2200349 4500 001 2054839
005 20170424144339.5
008 170519s2016 ||||||||||||||||| ||eng d
020 $a 9781369404661
035 $a (MiAaPQ)AAI10297064
035 $a AAI10297064
040 $a MiAaPQ $c MiAaPQ
100 1 $a Mina, Odette. $3 3168405
245 1 4 $a The fate, tranformation and persistence of estrogens in surface waters impacted by dairy manure application and effluent irrigation.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 201 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-04(E), Section: B.
500 $a Adviser: Heather E. Gall.
502 $a Thesis (Ph.D.)--The Pennsylvania State University, 2016.
520 $a The presence of emerging contaminants (ECs) in the environment has become a great concern in recent years. Many ECs are known to be endocrine disrupting compounds (EDCs) and they include natural estrogens and synthetic estrogens, which have been detected in surface waters worldwide. Effluent discharged to downstream water bodies from wastewater treatment plants, and surface runoff from manure-amended fields, are two important pathways of estrogens into the environment. In order to manage these wastes in a sustainable manner, more research is needed to understand the impacts of land application activities on water quality and contaminant fate and transport.
520 $a While the land application of animal manure provides many benefits, concerns exist regarding the subsequent transport of estrogens and the potential impacts on aquatic ecosystems. The effects of two methods of dairy manure application, surface broadcast and shallow disk injection, on the fate and transport of natural estrogens in surface runoff were examined. Ten natural surface runoff events were sampled over a 9-mo. period following fall manure application, in October of 2014, to 12 large field plots in Central Pennsylvania, USA. Study results show that the range of estrogen concentrations observed in surface runoff from the broadcast plots was several orders of magnitude higher ( > 5000 ng L-1) than the concentrations in runoff from the shallow disk injection plots ( < 10 ng L-1). Additionally, the transport dynamics differed, with the majority of the estrogen loads from the surface broadcast plots occurring during the first rainfall event after application, whereas the majority of the loads from the shallow disk injection plots occurred more than six months later during a hail storm event. Total estrogen loads were, on average, two orders of magnitude lower for shallow disk injection compared to surface broadcast. Independent of the method of manure application, 17alpha-estradiol and its metabolite estrone were preserved in the field for as long as nine months following application. Overall, injection of manure shows promise in reducing the potential for off-site losses of estrogens from manure-amended soils.
520 $a The effects of surface broadcast and shallow disk injection on nutrient export dynamics were also investigated and compared to estrogen dynamics. Various methods of data analysis were employed to investigate the role played by hydrologic and biogeochemical variability on the export of estrogens, identifying similarities and differences to the export of total dissolved phosphorus (TDP) and dissolved organic carbon (DOC). Our data analysis revealed that hydrologic variability was the dominant driver of TDP and DOC transport for both application types, whereas for estrogen transport concentration variability played a more important role with a more pronounced effect for the surface broadcast relative to the shallow disk injection application. More than 90% of the exported loads were transported during the first event for the surface broadcast plots, whereas the shallow disk injection plots did not generate runoff during that event, and nearly 65% of the estrogen loads were transported during a hail event at the end of April 2015, more than six months after manure applications.
520 $a The presence of natural and synthetic estrogens in treated wastewater used for irrigation of agricultural fields poses a potential risk to surface water ecosystems. While several recent studies have investigated the occurrence, fate, and transport of estrogens in the environment, the vast majority of these studies have focused on the fate of estrogens in streams and rivers. However, no studies have been conducted to assess the occurrence, persistence, and fate of estrogens in impacted sensitive aquatic ecosystems such as vernal pools. This is of particular importance because vernal pools serve as critical breeding habitat for amphibians, which are known to be sensitive to the presence of endocrine disrupting compounds.
520 $a The work completed for this dissertation improves the current knowledge of the fate and transport of natural and synthetic estrogens under environmentally relevant conditions. The studies improved the current understanding of the transformation, persistence, and overall fate of natural and synthetic estrogens in surface runoff from agricultural fields treated with dairy manure, and in alternating aerobic, reduced oxygen, and anaerobic conditions of VP habitats. (Abstract shortened by ProQuest.).
590 $a School code: 0176.
650 4 $a Agricultural engineering. $3 3168406
650 4 $a Environmental science. $3 677245
650 4 $a Hydrologic sciences. $3 3168407
690 $a 0539
690 $a 0768
690 $a 0388
710 2 $a The Pennsylvania State University. $3 699896
773 0 $t Dissertation Abstracts International $g 78-04B(E).
790 $a 0176
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10297064