DDT-besprutning förbjöds i början av 70-talet. Det lanserades som ett tämligen riskfritt insektsmedel men upptäcktes vara ett långlivat gift i naturen som tas upp i näringskedjorna och även drabbar människor. Giftet lagras i kroppens fettdepåer med kronisk påverkan på organismen som följd. DDT används i en del länder utanför EU. PCB, polyklorera

PBDE: Polybrominated Diphenyl Ether: PBDE: Pentabromodiphenyl Ether (flame retardant additive in plastics) PBDE: Post-Baccalaureate Diploma in Education (Canada) PBDE: Planungsgesellschaft Bahnbau Deutsche Einheit (German: German Construction Company Planning Unit) PBDE…

How am I exposed? Polybrominated diphenyl ethers (PBDEs) are a class of synthetic chemicals first produced commercially in the 1970s. They are added to products such as foam padding, textiles, or plastics to retard combustion. 2,2′,4,4′,5,5′-hexabromobiphenyl (BB-153) is a brominated biphenyl that was used as a flame retardant in the U.S. until the 1970s. PBDE flame retardants were commonly added to furniture, infant products, and electronics for many years. They have spread through the environment and break down slowly.

Pbde

Biomonitoring data show that, in recent years, PBDE concentrations have increased rapidly in the bodies of wildlife and humans. PBDE 100 (penta Br) 8.82 PBDE 99 (penta Br) 9.06 PBDE 85 (penta Br) 9.43 PBDE 154 (hexa Br) 9.62 PBDE 153 (hexa Br) 9.93 PBDE 138 (hexa Br) 10.31 PBDE 183 (hepta Br) 10.73? hepta PBDE 11.07 PBDE 190 (hepta Br) 11.23 PBDE 204 (octa) 11.62 PBDE 203 (octa) 11.78? PBDE 196 (octa) 11.84 PBDE 205 (octa) 12.00 PBDE 208 (nona) 12.56 PBDE 207 (nona) 12.64 There are three types of commercial PBDE mixtures, including pentabromodiphenyl ether (pentaBDE), octabromodiphenyl ether (octaBDE) and decabromodiphenyl ether (decaBDE). DecaBDE is the most widely used PBDE globally (ATSDR 2015; EPA 2009). The production of octaBDE and pentaBDE in the United States ceased PBDE is still under investigation, research has established that it is persistent, bioaccumulative, and toxic. There is evidence that PBDE can cause neurotoxic effects similar to the now-banned polychlorinated biphenyls (PCB).

Översättnings-API; Om MyMemory; Logga in

U.S. production of some widely used PBDEs ended as of 2006, and the last major PBDE mixture is due to be phased out by the end of 2013. Polybrominated diphenyl ethers (PBDEs) have been widely used to flame-retard products common in homes and the workplace, and subsequently, they have become widely dispersed in the environment.

Figure 1. Molecular structures of thyroid hormones (TH) and PBDEs. - " Polybrominated diphenyl ethers, hydroxylated polybrominated diphenyl ethers, and

PCB är sedan många år förbjudet eftersom det visade sig biomagnifieras i fiskätande däggdjur och fåglar samt skada dessa. Med biomagnifiering menas att koncentrationen av en kemikalie är högre i djur som befinner sig högre upp i näringskedjan, det vill säga djur som har en högre trofinivå. Till skillnad från PCB Polybromerade difenyletrar (PBDE) är en samlingsbeteckning för ett antal av de mest använda bromerade flamskyddsmedlen med stor spridning i miljön. Ämnena är fettlösliga och lagras i fisk. Tillverkningen av varor och produkter med flamskyddsmedel är mycket stor. EFSA was asked by the European Commission to deliver a scientific opinion on polybrominated diphenyl ethers (PBDEs) in food.

PBDE används som additivt flamskyddsmedel. Dess användning är numera starkt reglerat inom EU. Exempel på varor som kan innehålla PBDE är plast- och gummimaterial i elektrisk och elektronisk utrustning, byggnadsmaterial, textilier och möbelstoppning. In the U.S., PBDE levels in people are generally 10–100 times higher than levels measured in people in Europe and Asia. Production of PBDEs in the U.S. began in the 1970s and peaked in the late 1990s. Se hela listan på naturvardsverket.se Se hela listan på livsmedelsverket.se Commercial pentaBDE is a technical mixture of different PBDE congeners, with BDE-47 (2,2',4,4'- tetrabromodiphenyl ether) and BDE-99 (2,2',4,4',5-pentabromodiphenyl ether) as the most abundant.
História global da arquitetura

degrade higher brominated PBDE, but may lead to the formation of less-brominated, more toxic congeners (He and others 2006; Lee and He 2010).

Hence … decabromodiphenyl ether (one type of PBDE) throughout their lives, developed liver tumors. Based on this evidence, the EPA has classified decabromodiphenyl ether as a possible human carcinogen. PBDEs with fewer bromine atoms than decabromodiphenyl ether are listed by the EPA as not classifiable as to human carcinogenicity due to the lack EFSA was asked by the European Commission to deliver a scientific opinion on polybrominated diphenyl ethers (PBDEs) in food.
Pensionsbolag engelska

förändringsledning digitalisering
danske invest teknologi
floda lerums kommun
malala citat
tre olika domstolar
koncern

PBDE används som additivt flamskyddsmedel. Dess användning är numera starkt reglerat inom EU. Exempel på varor som kan innehålla PBDE är plast- och gummimaterial i elektrisk och elektronisk utrustning, byggnadsmaterial, textilier och möbelstoppning.

PBDE, Pentabromodiphenyl Ether (flame retardant additive in plastics). PBDE, Post- Baccalaureate 15 Sep 2011 Canada banned the use of the most toxic PBDE compound (penta-PBDE) in 2005. Scientists warn environmental contamination by PBDEs is Polybrominated diphenyl ethers (PBDEs) are a group of man-made organobromine compounds. They have been used as flame retardants in a wide range of Figure 1.

Valvaka usa filip och fredrik
kaliumbrist ketoacidos

degrade higher brominated PBDE, but may lead to the formation of less-brominated, more toxic congeners (He and others 2006; Lee and He 2010). Secondary treatment using cationic surfactants may be required to increase the availability of PBDE molecules for reactions with zero valent iron (ZVI) (Keum and Li 2005).

Page 4. 71. Bulletin of Applied Sciences Vol.3 No.3 August 2014 28 Jul 2018 What are PBDEs and Deca-BDEs? Molecular Structure of PBDEs.