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return kwic search for different out of >500 occurrences
683276 occurrences (No.7 in the rank) during 5 years in the PubMed. [no cache] 500 found

106) In this study, wastewater and sludge samples were collected from two WWTPs in Shanghai, China, to investigate the contamination level and fate of PFAs in different stages of processing.

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PMID:23933955 DOI:10.1007/s11356-013-2044-8

2015 Environmental science and pollution research international

* Occurrence and fate of perfluorinated acids in two wastewater treatment plants in Shanghai, China.

- Perfluorinated acids (PFAs) have drawn much attention due to their environmental persistence, ubiquitous existence, and bioaccumulation potential. The discharge of wastewater effluent from municipal wastewater treatment plants (WWTPs) is a significant source of PFAs to the environment. In this study, wastewater and sludge samples were collected from two WWTPs in Shanghai, China, to investigate the contamination level and fate of PFAs in different stages of processing. The total concentrations of PFAs (∑PFAs) in influent from plants A and B were 2,452 and 292 ng L(-1), respectively. Perfluoropentanoic acid (1,520 ± 80 ng L(-1) in plant A and 89.2 ± 12.1 ng L(-1) in plant B) was the predominant PFA in influent waters, followed by perfluorooctanoic acid. The concentration of ∑PFAs ranged from 75.0 to 126.0 ng g(-1) dry weight in sludge samples from plant B, with perfluorooctanesulfonic acid as the predominant contaminant. The concentrations and fate of PFAs in different WWTPs vary. The ∑PFAs entering plant A decreased significantly in the final effluent of activated sludge process, while that in plant B increased significantly in the final effluent of sequencing batch reactor system. The concentration changes could be due to the sorption onto sludge, or the degradation of PFAs precursors.

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(1)21 from	(18)3 amounts	(35)2 compared	(52)2 origins
(2)15 types	(19)3 aspects	(36)2 dietary	(53)2 output
(3)10 between	(20)3 cell	(37)2 diseases	(54)2 pHs
(4)9 doses	(21)3 degrees	(38)2 dosing	(55)2 patterns
(5)7 concentrations	(22)3 effects	(39)2 ethnic	(56)2 perspectives
(6)6 time	(23)3 for	(40)2 flow	(57)2 protocols
(7)5 in	(24)3 health	(41)2 frequencies	(58)2 range
(8)5 levels	(25)3 mechanisms	(42)2 gene	(59)2 regions
(9)4 null	(26)3 parts	(43)2 genes	(60)2 scenarios
(10)4 areas	(27)3 roles	(44)2 genetic	(61)2 sensory
(11)4 combinations	(28)3 species	(45)2 human	(62)2 surface
(12)4 components	(29)3 ways	(46)2 indicators	(63)2 taxa
(13)4 groups	(30)2 abutments	(47)2 internal-cone	(64)2 than
(14)4 methods	(31)2 and	(48)2 laser	(65)2 therapeutic
(15)4 stages	(32)2 approaches	(49)2 masking	(66)2 tissues
(16)4 tilt	(33)2 bleaching	(50)2 materials	(67)2 versions
(17)3 adhesive	(34)2 changes	(51)2 molecular	(68)2 views

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--- WordNet output for different --- =>いろいろな, 違った, 異なった, 様々の, 種々の, 異なる, 変わった Overview of adj different The adj different has 5 senses (first 4 from tagged texts) 1. (88) different -- (unlike in nature or quality or form or degree; "took different approaches to the problem"; "came to a different conclusion"; "different parts of the country"; "on different sides of the issue"; "this meeting was different from the earlier one") 2. (41) different -- (distinctly separate from the first; "that's another (or different) issue altogether") 3. (2) different -- (differing from all others; not ordinary; "advertising that strives continually to be different"; "this new music is certainly different but I don't really like it") 4. (1) unlike, dissimilar, different -- (marked by dissimilarity; "for twins they are very unlike"; "people are profoundly different") 5. different -- (distinct or separate; "each interviewed different members of the community") --- WordNet end ---