Zobrazeno 1 - 10
of 42
pro vyhledávání: '"J. Donald Johnson"'
Publikováno v:
Environmental Science & Technology. 26:1998-2004
Although monochloramine has been considered as an alternative disinfectant to chlorine, little is known about the identity of the byproducts from its reaction with natural organics. In this study, byproducts in mutagenic extracts of monochloraminated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b3374a2809c493b11539138e4a7e1c6
https://doi.org/10.1021/es00034a018
https://doi.org/10.1021/es00034a018
Publikováno v:
Environmental Science & Technology. 24:1536-1541
This paper reports results of experiments examining the routes and yields produced during the dansylation of model chloramine solutions. Potential limitations of the method arise due to matrix effects, low yields for dilute chloramine concentrations,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61f00b22f5d5a3c03f57415c2ba801ad
https://doi.org/10.1021/es00080a013
https://doi.org/10.1021/es00080a013
Autor:
James N. Jensen, J. Donald Johnson
Publikováno v:
Environmental Science & Technology. 24:985-990
Both inorganic monochloramine and organic chloramines interfere in the free available chlorine (FAC) measurement with N,N-diethyl-p-phenylenediamine (DPD)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63e3998ddb635a9827eb5ff7ec61fb7c
https://doi.org/10.1021/es00077a006
https://doi.org/10.1021/es00077a006
Autor:
James N. Jensen, J. Donald Johnson
Publikováno v:
Environmental Science & Technology. 24:981-985
The free available chlorine (FAC) amperometric titration measurement is subject to interference errors from chloramines. Interferences with this method increased as the positive applied voltage on the platinum electrode decreased. This trend was obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c48acf62b45d3f711db20db4886d3e6
https://doi.org/10.1021/es00077a005
https://doi.org/10.1021/es00077a005
Autor:
James N. Jensen, J. Donald Johnson
Publikováno v:
Analytical Chemistry. 61:991-994
The measurement of free chlorine in chlorinated natural water is subject to interference by organic chloramines. Quantitation of this interference is problematic, since organic chloramines can hydrolyze to free chlorine. This work describes a general
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bf21d85ccc745563d9c7fd968576b70
https://doi.org/10.1021/ac00184a014
https://doi.org/10.1021/ac00184a014
Autor:
J. Donald Johnson, Robert G. Qualls
Publikováno v:
Environmental Science & Technology. 17:692-698
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bba1ae55c750bf9d401f42472475cc9
https://doi.org/10.1021/es00117a013
https://doi.org/10.1021/es00117a013
Publikováno v:
Organic Geochemistry. 8:65-69
Aquatic fulvic acid, isolated from a North Carolina bay lake, was reacted with ozone, an alternative oxidant in drinking water treatment. Ozonated samples were acidified, extracted with ether, dried, concentrated, and methylated prior to GC-MS analys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94380cee3c8226d984a6b2b4513e8ab8
https://doi.org/10.1016/0146-6380(85)90052-x
https://doi.org/10.1016/0146-6380(85)90052-x
Autor:
Russell F. Christman, J. Ronald Hass, J. Donald Johnson, Marie J. Bobenrieth, Daniel L. Norwood
Publikováno v:
Environmental Science & Technology. 14:187-190
A series of compounds designed to model the monomeric components of aquatic humic material was reacted with aqueous chlorine at pH 7. Chloroform production and chlorine demand were measured for each compound over varied time periods. All compounds st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::deddbe2ff3d6fd71db70d096cd4ae865
https://doi.org/10.1021/es60162a012
https://doi.org/10.1021/es60162a012
Autor:
James N. Jensen, J. Donald Johnson
Publikováno v:
Journal - American Water Works Association. 81:59-64
Both the DPD and amperometric titration methods for measuring free available chlorine Analytical methods for FAC (FAC) are subject to interference from monochloramine and organic chloramines. The measured FAC concentration in the presence ofchloramin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9573d5d07e92a29071b5a4837cea9ef1
https://doi.org/10.1002/j.1551-8833.1989.tb06894.x
https://doi.org/10.1002/j.1551-8833.1989.tb06894.x
Autor:
J. Donald. Johnson, John H. Stanley
Publikováno v:
Analytical Chemistry. 51:2144-2147
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c420a2fc3296b53ad8b08eba416e0ef
https://doi.org/10.1021/ac50049a020
https://doi.org/10.1021/ac50049a020