Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Denys Monnier"'
Publikováno v:
Analytica Chimica Acta. 68:61-71
Three spectrophotometric methods for the determination of nitrite have been developed based on diazotization of 4-aminoacetophenone followed by coupling with N-phenyl-1-naphthylamine or N-phenyl-2-naphthylamine. In the former case, the coloured speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bffb990feac78e6bc67b8d61964ef7e
https://doi.org/10.1016/s0003-2670(01)85146-1
https://doi.org/10.1016/s0003-2670(01)85146-1
Publikováno v:
Analytica Chimica Acta. 68:217-221
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1695865b65bed179168223a870dc0cbd
https://doi.org/10.1016/s0003-2670(01)85165-5
https://doi.org/10.1016/s0003-2670(01)85165-5
Publikováno v:
Analytica Chimica Acta. 68:253-266
A study of the behaviour of the chloride-selective electrode in the concentration range below the linear response region, has shown that the nonlinearity is principally due to three factors: the solubility of the membrane, the concentration of chlori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c6bd0b4a816b238eb13c7a008a9d110
https://doi.org/10.1016/s0003-2670(01)82580-0
https://doi.org/10.1016/s0003-2670(01)82580-0
Publikováno v:
Helvetica Chimica Acta. 35:396-400
Etude pH-metrique de l'acide quinaldique. Determination de la constante du couple acide/base (QH/Q−1), Ka = 1,2 · 10−5.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4c720daaf6df72f1c3d9021709f4237
https://doi.org/10.1002/hlca.19520350150
https://doi.org/10.1002/hlca.19520350150
Publikováno v:
Helvetica Chimica Acta. 47:1980-1986
La dihydroxy-2,4-benzophenone(D. H. B.) qui donne avec l'acide borique un complexe fluorescent est proposee pour le dosage fluorimetrique du bore. L'intensite de la fluorescence est proportionnelle a la concentration du bore entre 0,0036 et 0,18 μg/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67c52cd8505880964a6374b9c778a605
https://doi.org/10.1002/hlca.19640470738
https://doi.org/10.1002/hlca.19640470738
Publikováno v:
Analytica Chimica Acta. 34:346-359
A method is proposed for the determination of manganese(II) by anodic stripping polarography. A systematic study was made of the various factors affecting the course of pre-electrolysis as well as the anodic stripping. A procedure is given for the de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02c8045d4b026de1258185ef6d1457e9
https://doi.org/10.1016/s0003-2670(00)89051-0
https://doi.org/10.1016/s0003-2670(00)89051-0
Publikováno v:
Helvetica Chimica Acta. 52:2183-2193
Boric acid-benzoylacetone complexes, formed in concentrated sulfuric acid, are investigated phosphorimetrically after addition of ether to forme suitable glaces at 77K. Spectral, equilibrium and mean lifetime determinations establish the formation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97fa5245a9c819c244f2223842114739
https://doi.org/10.1002/hlca.19690520742
https://doi.org/10.1002/hlca.19690520742
Publikováno v:
Helvetica Chimica Acta, Vol. 32, No 6 (1949) pp. 1865-1869
Après l'étude de la stabilité des principaux anions du soufre en solution aqueuse par le pH‐mètre, nous avons établi des méthodes de dosage semi‐quantitatives pour chacun de ces ions, basées sur la limite de perceptibilité.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b2f892645c7846fb79f8ccd9cacff91
https://doi.org/10.1002/hlca.19490320609
https://doi.org/10.1002/hlca.19490320609
Autor:
P. Zwahlen, Denys Monnier
Publikováno v:
Helvetica Chimica Acta. 39:1859-1863
Appliquant la methode de Willard & Young a de tres petites quantites de Cr+3 en presence de beaucoup de Cr+6, nous avons mis au point un mode operatoire permettant de doser quelques γ de Cr+3 en presence de 10 a 100 fois plus de Cr+6 (on peut meme a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fefea066ebf5c3d5bc68576b1e683653
https://doi.org/10.1002/hlca.19560390647
https://doi.org/10.1002/hlca.19560390647
Publikováno v:
Helvetica Chimica Acta. 34:433-436
II est decrit une methode de dosage de l'ion potassium au moyen de la dipicrylamine. La determination polarographique de ce reactif s'effectue facilement et avec precision. La methode n'exige pas de separation, elle permet de doser le potassium dans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1fd82bf868673716558a010aa00b1b
https://doi.org/10.1002/hlca.19510340205
https://doi.org/10.1002/hlca.19510340205