EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectrophotometric determination of iron by 2 5 bromo 2 pyridylazo 5 diethylamino phenol


, : Spectrophotometric determination of iron by 2 5 bromo 2 pyridylazo 5 diethylamino phenol. Analytical Letters 14(4): 241-248

The system Fe3+-5-Br-PADAP [2-(5-bromo-2-pyridylazo)-5-diethylaminophenol], in the presence of Triton X-100, was studied. The molar ratio of Fe3+/5-Br-PADAP in the complex was 1:2 at pH 2-6, the molar absorptivity was 8.64 .times. 104 at 595 nm and the apparent stability constant was 1.84 .times. 1013. A more sensitive spectrophotometric method for Fe determination was developed. The Fe contents of Chinese leaf tea samples determined by this method were 0.024% for Qimen Black Tea and 0.037% for Tunxi Green Tea. Results agreed with those obtained by the o-phenanthroline method.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 006460419

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Schatz, F.; Brautigam, M.; Dobrowolski, E.; Effendy, I.; Haberl, H.; Mensing, H.; Weidinger, G.; Stutz, A., 1995: Nail incorporation kinetics of ternibafine in onychomycosis patients. Patients with toe-nail onychomycosis were treated with terbinafine (250 mg daily, n = 20) for either 6 or 12 weeks in a randomized double-blind study. Plasma and distal nail clippings were taken before initiation of therapy and 1, 6, 12, 18, 24, 3...

Sagen, J.; Lu, Y.; Yeomans, D. C., 1999: Antinociceptive pharmacology of intrathecal transplants of bovine adrenal chromaffin cells. Society for Neuroscience Abstracts 25(1-2): 1942

Czar, Michael J.; Welsh, Michael J.; Pratt, William B., 1996: Immunofluorescence localization of the 90-kDa heat-shock protein to cytoskeleton. The 90-kDa heat-shock protein, hsp90, is an abundant and conserved protein located predominantly in the cytoplasm. Previous reports have localized a portion of the hsp90 to microtubules and to microfilaments. Here, we show that colocalization of h...

Barinova, Yu V.; Buglai, B. M., 1975: Standard values for the strength of glue bonds between decorative laminated paper/plastic overlays and their wood base. The non-uniform tear-off test has now been incorporated in Soviet standard GOST 15867-70 for testing the adhesion strength of overlays to their wood base [cf. FA 30, 3117]. Detailed results are given here of studies made on the effect of the thick...

Wenrich K. J.; Scott James H.; Balcer R. A.; Vangosen B. S.; Bedinger G. M.; Burmaster Betsi; Mascarenas J. F.; Sutphin H. B., 1985: Discovery of a mineralized breccia pipe in Mohawk Canyon, northern Arizona. AAPG Bulletin 69(5): 870

Labadie, Rp; Otten, J; Svendsen, Ab, 1972: An investigation on the anthracene derivatives in Rumex hydrolapathum Huds. iI. Pharmaceutisch weekblad: 107 (35) 541-547

Crooks G.M., 1985: The orphan products board of the department of health and human services. Van Woert, M H And E Chung (Ed ) Progress in Clinical And Biological Research, Vol 197 Cooperative Approaches to Research And Development Of Orphan Drugs; Meeting, New York, N Y , Usa, Apr 9-10, 1984 Xi+204p Alan R Liss, Inc : New York, N Y , Usa Illus Maps 19-24

Kellis, Manolis; Birren, Bruce W.; Lander, Eric S., 2004: Proof and evolutionary analysis of ancient genome duplication in the yeast Saccaromyces cerevisiae. Whole-genome duplication followed by massive gene loss and specialization has long been postulated as a powerful mechanism of evolutionary innovation. Recently, it has become possible to test this notion by searching complete genome sequence for s...

Ram, Hym; Gopal, Bh, 1981: Some observations on the flowering of bamboos in Mizoram. Current science, 50(16): 708-710

Bhaumik, M.; Mukherji, S., 1980: Germination inhibitor of jute seed. Seeds of jute cv. JRO-632 were germinated on moist filter paper in Petri dishes, after storage in the open for <1 yr. The solubility (using water, methanol, ethanol, ether, acetone or chloroform), and effects of dilution and chromatographic sep...