Blar i NIVA Open Access Archive på forfatter "Larssen, Thorjørn"
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Acid deposition in Asia: Emissions, deposition, and ecosystem effects
Duan, Lei; Yu, Qian; Zhang, Qiang; Wang, Zifa; Pan, Yuepeng; Larssen, Thorjørn; Tang, Jie; Mulder, Jan (Journal article; Peer reviewed, 2016)We review and synthesize the current state of knowledge regarding acid deposition and its environmental effects across Asia. The extent and magnitude of acid deposition in Asia became apparent only about one decade after ... -
Assessing Air–Surface Exchange and Fate of Mercury in a Subtropical Forest Using a Novel Passive Exchange-Meter Device
Zhang, Hui; Nizzetto, Luca; Feng, Xinbin; Borgå, Katrine; Sommar, Jonas; Fu, Xuewu; Zhang, Hua; Zhang, Gan; Larssen, Thorjørn (Journal article; Peer reviewed, 2019) -
Dynamic Modeling and Target Loads of Sulfur and Nitrogen for Surface Waters in Finland, Norway, Sweden, and the United Kingdom
Posch, Maximilian; Aherne, Julian; Moldan, Filip; Evans, Chris D.; Forsius, Martin; Larssen, Thorjørn; Helliwell, Rachel C.; Cosby, B Jack (Journal article; Peer reviewed, 2019)The target load concept is an extension of the critical load concept of air pollution inputs to ecosystems. The advantage of target loads over critical loads is that one can define the deposition and the point in time ... -
Effects of sample preparation on methylmercury concentrations in arctic organisms
Braaten, Hans Fredrik Veiteberg; Harman, Christopher Peter; Øverjordet, Ida Beathe; Larssen, Thorjørn (Journal article; Peer reviewed, 2014)The biogeochemical cycling of mercury (Hg) in the marine environment is an issue of global concern, as consumption of marine fish is a major route of human exposure to the toxic specie methylmercury (MeHg). The most widely ... -
Effects of sample preservation and storage on mercury speciation in natural stream water
Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Harman, Christopher Peter; Hageström, Ulla; Larssen, Thorjørn (Journal article; Peer reviewed, 2014)Despite an increasing focus on low level methods for determination of mercury species in water over the last decades, few studies have paid attention to direct effects of different sample preparation methods (i.e. preservation ... -
Environmental factors influencing mercury speciation in Subarctic and Boreal lakes
Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Fjeld, Eirik; Rognerud, Sigurd; Lydersen, Espen; Larssen, Thorjørn (Journal article; Peer reviewed, 2014)Environmental drivers of total mercury (TotHg) concentrations, methylmercury (MeHg) concentrations, and MeHg fractions (a proxy for methylation potential, expressed as %MeHg) were assessed in a synoptic study of 51 lakes ... -
How Can the Scope of a New Global Legally Binding Agreement on Plastic Pollution to Facilitate an Efficient Negotiation Be Clearly Defined?
Yangzhao, Sun; Lin, Yan; Steindal, Eirik Hovland; Yiang, Chao; Yang, Sen; Larssen, Thorjørn (Peer reviewed; Journal article, 2021) -
Impacts of Air Pollution on Freshwater Acidification under Future Emission Reduction Scenarios; ICP Waters contribution to WGE report (ICP Waters report 108/2011)
Wright, Richard F.; Helliwell, Rachel; Hruska, Jakub; Larssen, Thorjørn; Rogora, Michela; Rzychoñ, Dorota; Skjelkvåle, Brit Lisa; Worsztynowicz, Adam (NIVA-rapport;6243, Research report, 2011-11)The UNECE Convention on Long-range Transboundary Air Pollution (LRTAP) is currently working on a revision of the Gothenburg protocol. ICP Waters has used the dynamic model MAGIC to evaluate the effects of future deposition ... -
Improvement in municipal wastewater treatment alters lake nitrogen to phosphorus ratios in populated regions
Tong, Yindong; Wang, Mengzhu; Peñuelas, Josep; Liu, Xueyan; Paerl, Hans W.; Elser, James J.; Sardans, Jordi; Couture, Raoul-Marie; Larssen, Thorjørn; Hu, Hongying; Dong, Xin; He, Wei; Zhang, Wei; Wang, Xuejun; Zhang, Yang; Liu, Yi; Zeng, Siyu; Kong, Xiangzhen; Janssen, Annette B.G.; Lin, Yan (Peer reviewed; Journal article, 2020)Large-scale and rapid improvement in wastewater treatment is common practice in developing countries, yet this influence on nutrient regimes in receiving waterbodies is rarely examined at broad spatial and temporal scales. ... -
In Inland China, Rice, Rather than Fish, Is the Major Pathway for Methylmercury Exposure
Zhang, Hua; Feng, Xinbin; Larssen, Thorjørn; Qiu, Guangle; Vogt, Rolf David (Journal article; Peer reviewed, 2010)Background: Fish consumption is considered the primary pathway of methylmercury (MeHg) exposure for most people in the world. However, in the inland regions of China, most of the residents eat little fish, but they live ... -
Material Flow for the Intentional Use of Mercury in China
Lin, Yan; Wang, Shuxiao; Wu, Qingru; Larssen, Thorjørn (Journal article; Peer reviewed, 2016)Intentional use of mercury (Hg) is an important contributor to the release of Hg into the environment. This study presents the first inventory of material flow for intentional use of Hg in China. The total amount of Hg ... -
Mercury in fish from Norwegian lakes: The complex influence of aqueous organic carbon
Braaten, Hans Fredrik Veiteberg; de Wit, Heleen; Larssen, Thorjørn; Poste, Amanda (Journal article; Peer reviewed, 2018)Mercury (Hg) concentrations in water and biota are often positively correlated to organic matter (OM), typically measured as total or dissolved organic carbon (TOC/DOC). However, recent evidence suggests that higher OM ... -
Modelling environmental impacts of Cesium-137 under a hypothetical release of radioactive waste
Lin, Yan; Couture, Raoul-Marie; Klein, Heiko; Ytre-Eide, Martin; Dyve, Jan Erik; Lind, Ole Christian; Bartnicki, Jerzy; Nizzetto, Luca; Butterfield, Daniel; Larssen, Thorjørn; Salbu, Brit (Journal article; Peer reviewed, 2019)Waste tanks at the nuclear facility located at Sellafield, UK, represent a nuclear source which could release radionuclides to the atmosphere. A model chain which combines atmospheric transport, deposition as well as ... -
New insights into traditional health risk assessments of mercury exposure: Implications of selenium
Zhang, Hua; Feng, Xinbin; Chan, Hing Man; Larssen, Thorjørn (Journal article; Peer reviewed, 2014)There is increasing evidence that selenium (Se) has a significant effect on mercury (Hg) toxicology; however, Hg exposure risk assessments usually consider only the amount of Hg present in the environment or in food. On ... -
Pesticide levels and environmental risk in aquatic environments in China - A review
Grung, Merete; Lin, Yan; Zhang, Hua; Steen, Anne Orderdalen; Huang, Jun; Zhang, Gan; Larssen, Thorjørn (Journal article; Peer reviewed, 2015)China is one of the largest producers and consumers of pesticides in the world today. Along with the widespread use of pesticides and industrialization, there is a growing concern for water quality. The present review aims ... -
Screening for Stockholm Convention persistent organic pollutants in the Bosna River (Bosnia and Herzogovina)
Harman, Christopher Peter; Grung, Merete; Djedjibegovic, Jasmina; Marjanovic, Aleksandra; Sober, Miroslav; Sinanovic, Kemo; Fjeld, Eirik; Rognerud, Sigurd; Ranneklev, Sissel Brit; Larssen, Thorjørn (Journal article; Peer reviewed, 2013)The Stockholm Convention, which aspires to manage persistent organic pollutants (POPs) at the international level, was recently ratified in Bosnia and Herzegovina (BiH). Despite this fact, there is in general a paucity of ... -
Seasonal and year-to-year variation of mercury concentration in perch (Perca fluviatilis) in boreal lakes
Braaten, Hans Fredrik Veiteberg; Fjeld, Eirik; Rognerud, Sigurd; Lund, Espen; Larssen, Thorjørn (Journal article; Peer reviewed, 2014)The authors examined the seasonal and year‐to‐year variations of mercury (Hg) concentrations in populations of perch (Perca fluviatilis) from 2 boreal freshwater lakes in southeast Norway. Fish Hg concentrations were ... -
The organic pollutant status of rivers in Bosnia and Herzegovina as determined by a combination of active and passive sampling methods
Harman, Christopher; Grung, Merete; Djedjibegovic, Jasmina; Marjanovic, Aleksandra; Fjeld, Eirik; Braaten, Hans Fredrik Veiteberg; Sober, Miroslav; Larssen, Thorjørn; Ranneklev, Sissel Brit (Journal article; Peer reviewed, 2018)There is an overall lack of data concerning the pollution status of Bosnia Herzegovina, which is confounded by fragmented national environmental management. The present study aimed to provide some initial data for ... -
Weir building: A potential cost-effective method for reducing mercury leaching from abandoned mining tailings
Xu, Xiaohang; Gu, Chunhao; Feng, Xinbin; Qiu, Guangle; Shang, Lihai; Xu, Zhidong; Lu, Qinhui; Xiao, Dean; Wang, Heng; Lin, Yan; Larssen, Thorjørn (Journal article; Peer reviewed, 2019)To mitigate mercury (Hg) pollution and reduce Hg transportation downstream, a weir was designed across a river system impacted by leachate from the slagheap of the Yanwuping Hg mine in Wanshan Hg mining area. A whole ...