ELIZA cgi-bash version rev. 1.90
- Medical English LInking keywords finder for the PubMed Zipped Archive (ELIZA) -

return kwic search for while out of >500 occurrences
341393 occurrences (No.55 in the rank) during 5 years in the PubMed. [no cache] 500 found
176) 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.
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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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[frequency of next (right) word to while]
(1)79 the (16)3 it (31)2 environmental (46)2 promoting
(2)14 in (17)3 its (32)2 focusing (47)2 providing
(3)13 no (18)3 most (33)2 for (48)2 receiving
(4)11 a (19)3 others (34)2 further (49)2 serum
(5)6 this (20)3 that (35)2 harvesting (50)2 she
(6)4 at (21)3 there (36)2 increasing (51)2 significant
(7)4 maintaining (22)3 these (37)2 minimising (52)2 similar
(8)4 one (23)3 those (38)2 much (53)2 slightly
(9)4 performing (24)3 women (39)2 negative (54)2 some
(10)4 reducing (25)2 Asians (40)2 numerous (55)2 still
(11)4 retaining (26)2 accounting (41)2 on (56)2 subcutaneous
(12)4 simultaneously (27)2 also (42)2 other (57)2 their
(13)4 they (28)2 controlling (43)2 participants
(14)4 using (29)2 digging/gardening, (44)2 preserving
(15)3 20% (30)2 downregulation (45)2 previous

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--- WordNet output for while --- =>時間と労働, その間に, 時間, する間に, なのに, そのうえ, をのんびりと過す Overview of noun while The noun while has 1 sense (first 1 from tagged texts) 1. (23) while, piece, spell, patch -- (a period of indeterminate length (usually short) marked by some action or condition; "he was here for a little while"; "I need to rest for a piece"; "a spell of good weather"; "a patch of bad weather") --- WordNet end ---