{"title":"巴西东北大陆架水域的石油碳氢化合物:基线值","authors":"Eliete Zanardi-Lamardo, C. Schettini","doi":"10.1590/2675-2824070.21078ezl","DOIUrl":null,"url":null,"abstract":"Water quality on the continental shelf off the eastern Brazilian Northeast region was investigated in two oceanographic campaigns during winter and summer, when vertical profiles of salinity, temperature, turbidity, chlorophyll and dissolved oxygen were recorded. Dissolved / dispersed petroleum hydrocarbons (DDPH) were also analyzed in sub-superficial water samples using fixed wavelength fluorescence spectroscopy methods. Shelf waters are dominated by Tropical Waters, with high salinity (> 36.5 g kg -1 ) and temperature (> 26 °C) and little continental influence. Turbidity was higher during winter, which may be due to the higher continental contribution and/or higher wave action. Chlorophyll was mostly < 1 µg L -1 and dissolved oxygen saturation was predominantly high (> 90%), but innermost costal stations were influenced by the Capibaribe estuary. Median DDPH concentrations were as low as 0.07 and 0.04 µg L -1 Carmópolis oil equivalents during winter and summer respectively, and 0.02 µg L -1 chrysene equivalent for both periods. An exception was observed off Suape Harbor (0.35 µg L -1 Carmópolis oil equiv. and 0.13 µg L -1 chysene equiv.), suggesting navigation activities as the main local source. The overall DDPH median of 0.06 μg L -1 Carmópolis oil equivalents and 0.02 μg L -1 chrysene equivalents are proposed as the baseline concentration for non-polluted coastal water for the tropical western Atlantic Ocean margin. Abstract Descriptors: Chrysene, Turbidity.","PeriodicalId":19418,"journal":{"name":"Ocean and Coastal Research","volume":"1 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Petroleum hydrocarbons in Brazilian Northeast continental shelf waters: baseline values\",\"authors\":\"Eliete Zanardi-Lamardo, C. Schettini\",\"doi\":\"10.1590/2675-2824070.21078ezl\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Water quality on the continental shelf off the eastern Brazilian Northeast region was investigated in two oceanographic campaigns during winter and summer, when vertical profiles of salinity, temperature, turbidity, chlorophyll and dissolved oxygen were recorded. Dissolved / dispersed petroleum hydrocarbons (DDPH) were also analyzed in sub-superficial water samples using fixed wavelength fluorescence spectroscopy methods. Shelf waters are dominated by Tropical Waters, with high salinity (> 36.5 g kg -1 ) and temperature (> 26 °C) and little continental influence. Turbidity was higher during winter, which may be due to the higher continental contribution and/or higher wave action. Chlorophyll was mostly < 1 µg L -1 and dissolved oxygen saturation was predominantly high (> 90%), but innermost costal stations were influenced by the Capibaribe estuary. Median DDPH concentrations were as low as 0.07 and 0.04 µg L -1 Carmópolis oil equivalents during winter and summer respectively, and 0.02 µg L -1 chrysene equivalent for both periods. An exception was observed off Suape Harbor (0.35 µg L -1 Carmópolis oil equiv. and 0.13 µg L -1 chysene equiv.), suggesting navigation activities as the main local source. The overall DDPH median of 0.06 μg L -1 Carmópolis oil equivalents and 0.02 μg L -1 chrysene equivalents are proposed as the baseline concentration for non-polluted coastal water for the tropical western Atlantic Ocean margin. Abstract Descriptors: Chrysene, Turbidity.\",\"PeriodicalId\":19418,\"journal\":{\"name\":\"Ocean and Coastal Research\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ocean and Coastal Research\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1590/2675-2824070.21078ezl\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MARINE & FRESHWATER BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ocean and Coastal Research","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1590/2675-2824070.21078ezl","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MARINE & FRESHWATER BIOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
在冬季和夏季的两次海洋学活动中,对巴西东部东北地区大陆架的水质进行了调查,记录了盐度、温度、浊度、叶绿素和溶解氧的垂直剖面。用固定波长荧光光谱法分析了亚浅表水样品中的溶解/分散石油烃(DDPH)。陆架水域以热带水域为主,盐度高(> 36.5 g kg -1),温度高(> 26°C),大陆影响小。浊度在冬季较高,这可能是由于较高的大陆贡献和/或较高的波浪作用。叶绿素大部分< 1µg L -1,溶解氧饱和度主要高(bbb90 %),但最内海岸站受卡布巴里伯河口的影响。在冬季和夏季,DDPH中位数浓度分别低至0.07和0.04 μ g L -1 Carmópolis油当量,以及0.02 μ g L -1 chrysene当量。在Suape港观察到一个例外(0.35µg L -1 Carmópolis油当量和0.13µg L -1乳糜当量),表明航行活动是主要的当地来源。提出了0.06 μg L -1 Carmópolis油当量和0.02 μg L -1芘当量的总DDPH中位数作为西大西洋热带边缘未污染沿海水域的基线浓度。描述词:Chrysene,浊度。
Petroleum hydrocarbons in Brazilian Northeast continental shelf waters: baseline values
Water quality on the continental shelf off the eastern Brazilian Northeast region was investigated in two oceanographic campaigns during winter and summer, when vertical profiles of salinity, temperature, turbidity, chlorophyll and dissolved oxygen were recorded. Dissolved / dispersed petroleum hydrocarbons (DDPH) were also analyzed in sub-superficial water samples using fixed wavelength fluorescence spectroscopy methods. Shelf waters are dominated by Tropical Waters, with high salinity (> 36.5 g kg -1 ) and temperature (> 26 °C) and little continental influence. Turbidity was higher during winter, which may be due to the higher continental contribution and/or higher wave action. Chlorophyll was mostly < 1 µg L -1 and dissolved oxygen saturation was predominantly high (> 90%), but innermost costal stations were influenced by the Capibaribe estuary. Median DDPH concentrations were as low as 0.07 and 0.04 µg L -1 Carmópolis oil equivalents during winter and summer respectively, and 0.02 µg L -1 chrysene equivalent for both periods. An exception was observed off Suape Harbor (0.35 µg L -1 Carmópolis oil equiv. and 0.13 µg L -1 chysene equiv.), suggesting navigation activities as the main local source. The overall DDPH median of 0.06 μg L -1 Carmópolis oil equivalents and 0.02 μg L -1 chrysene equivalents are proposed as the baseline concentration for non-polluted coastal water for the tropical western Atlantic Ocean margin. Abstract Descriptors: Chrysene, Turbidity.