Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Chi-Ren Lan"'
Publikováno v:
Talanta. 52:417-424
A reliable and very sensitive procedure for the determination of trace levels of molybdenum in seawater is proposed. The complex of molybdenum with 8-hydroxyquinoline (Oxine) is analyzed by cathodic stripping squarewave voltammetry based on the adsor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7bc056f0abd455e8e7a1c8dfe99607b
https://doi.org/10.1016/s0039-9140(00)00391-x
https://doi.org/10.1016/s0039-9140(00)00391-x
Publikováno v:
Analytical Sciences. 13:415-421
A microwave-assisted digestion system enabling simultaneous treatment of thirty-six samples with oxidizing acidic media in double-closed vessels was devised. Aluminum was subsequently separated from the digested solution through solid phase extractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d640e2f936fcd57085bcf2eba6ff36
https://doi.org/10.2116/analsci.13.415
https://doi.org/10.2116/analsci.13.415
Autor:
M. H. Yang, Chi-Ren Lan
Publikováno v:
Analytica Chimica Acta. 287:111-117
The coupling of an on-line column preconcentration manifold with continuous flow ultrasonic nebulizer equipped with a desolvation system for simultaneous determination of metal ions by inductively coupled plasma atomic emission spectrometry (ICP-AES)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e38ad136e7c4074ebe64bb79e0ab5c1
https://doi.org/10.1016/0003-2670(94)85108-5
https://doi.org/10.1016/0003-2670(94)85108-5
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry Articles. 172:117-123
Direct determination of trace metals at extremely low levels in high purity water is described. The method incorporates an in situ preconcentration technique in the graphite furnace of the atomic absorption spectrometer. The in situ preconcentration
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7c5d812d6143215b8c9aad55b8f635e
https://doi.org/10.1007/bf02040668
https://doi.org/10.1007/bf02040668
Publikováno v:
Journal of the Chinese Chemical Society. 40:241-244
The method of multiple injections coupled with graphite furnace and atomic absorption spectrometry is applied to direct determination of total chromium at extremely small concentrations in samples of open sea water. The method involves the in situ pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e82e17570cbfede551578aa1487e1d6c
https://doi.org/10.1002/jccs.199300036
https://doi.org/10.1002/jccs.199300036
Publikováno v:
Sustainable Environment Research; 2011, Vol. 21 Issue 1, p1-8, 8p, 1 Black and White Photograph, 3 Diagrams, 2 Charts, 2 Graphs, 1 Map
Autor:
Zeev B. Alfassi, Chi-Ren Lan
Publikováno v:
The Analyst. 119:1033
A direct method was developed for the determination of Mn in sea-water by atomic absorption spectrometry (AAS) with a graphite furnace. The use of NaOH for chemical modification allowed the removal of the matrix major elements by prior ashing at a lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0f7fd7844a79f5c7aaf904c70d84291
https://doi.org/10.1039/an9941901033
https://doi.org/10.1039/an9941901033
Autor:
Chi-Ren Lan
Publikováno v:
The Analyst. 118:189
The use of sodium hydroxide as a chemical modifier for the direct determination of trace amounts of cadmium in sea-water by electrothermal atomic absorption spectrometry is described. It permits a selected ashing temperature up to 1400 °C and marked
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::963e0767cc84f37069835329e1e6f5f0
https://doi.org/10.1039/an9931800189
https://doi.org/10.1039/an9931800189
Publikováno v:
The Analyst. 116:35
A two-step method for the determination of CrVI and CrIII in natural waters was developed. The method is based on the variation of the coprecipitation yields with Pb(PDC)2(PDC = pyrrolidine dithiocarbamate) as a function of pH. By using two different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c873f0181c916bd58bf25b4640226137
https://doi.org/10.1039/an9911600035
https://doi.org/10.1039/an9911600035