نتایج جستجو برای: cadmium sulphide

تعداد نتایج: 26086  

2017
Mikael Motelica-Heino W Davison William Davison

In surface sediments, metal mobility is controlled by the recruitment and turn-over of organic matter whereas sulphide is thought to control the concentration of metals in sediment pore water by removing them from the solution. DGT is a dynamic probe that measures the kinetically available fraction of metals or sulphide. DGT uses a credit card size probe inserted into the sediment that provides...

2007

IUPAC name: Hydrogen sulphide Common name: Hydrogen sulphide CAS number: 7783-06-4 Synonyms: Dihydrogen monosulphide ; dihydrogen sulphide, hydrogen sulphuric acid ; sewer gas ; stink damp ; sulphuretted hydrogen ; sulphur hydrogen EINECS 231-977-3 EC number 016-001-00-4 Molecular formula : H2S Molecular weight: 34.09 Freezing point at 101.3 kPa: -85.5 C Boiling point at 101.3 kPa: -60.7 C Vapo...

Journal: :Occupational Medicine 1996

2014
Jyotsna Agarwal

The present work is aimed at studying the adsorption capacity of powdered Fuller’s earth for the removal of ferri/ferrous impurities found in commercial grade sodium sulphide. The latter is not suitable for the manufacture of pharmaceutical grade chemicals and dye chemicals. The author has carried out experiments taking different dosage of powdered Fuller’s earth as an adsorbent in the aqueous ...

2012
Roshan S Pai

Cotton hanks were dyed with three different sulphur dyes using non-sulphide reducing agents such as glucose, fructose, invert sugar and molasses. The alkalies employed for reduction were sodium carbonate and sodium hydroxide. Invert sugar as a reducing agent and sodium carbonate as alkali proved to be better as this combination gave results comparable to those obtained with the conventional sod...

2014
A. Pasupathy S. Nirmala P. Sakthivel G. Abirami M. Raja

This work deals with the evaluation of diphenyl sulphide as a corrosion inhibitor for zinc in 0.5N HCl and 0.5N H2SO4 by conventional weight loss and gasometric methods. Results indicate that diphenyl sulphide exhibited high inhibition efficiencies in both the acids but performed better in 0.5N H2SO4 than in 0.5N HCl. The inhibition efficiency was found to increase with increase in the inhibito...

Journal: :The Biochemical journal 1955
R Buschbeck

An investigation of the different steps in the method of Weil-Malherbe & Bone (1949), as modified by Taylor (1953), has led to an altered procedure for citric acid determination, with increased sensitivity and accuracy. The main modifications involved are the use of (i) a higher concentration of sulphuric acid during the formation of pentabromoacetone, and (ii) a thiourea-borax-sodium sulphide ...

2002
JoAnne Nelson

Kudz Ze Kayah (KZK) and Wolverine are volcanogenic massive sulphide deposits hosted by Early Mississippian meta-rhyolites, marine metasedimentary rocks and intermediate to mafc metatuffs of the Yukon Tanana Terrane in the Simpson Range, southern Yukon (Figure I). This project aims to pinpoint, within central northern B.C., stratigraphy favorable to the formation of Early Mississippian volcanoge...

2015
G. Munz A. Mannucci J. Arreola - Vargas F. Alatriste - Mondragon F. Giaccherini G. Mori

Authotrophic denitrification with sulphide using nitrate (R1) and nitrite (R2) as electron acceptor were investigated at bench scale. Different SRT (5 and 20 d) have been tested in R1 while R2 was operated at SRT = 13 d. The results indicated that the process allows to achieve complete sulphide removal in all testes conditions. Tested sulphide loads were estimated form the H2S produced in a pil...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2015
G Munz A Mannucci J Arreola-Vargas F Alatriste-Mondragon F Giaccherini G Mori

Autotrophic denitrification with sulphide using nitrate (R1) and nitrite (R2) as electron acceptor was investigated at bench scale. Different solids retention times (SRT) (5 and 20 d) have been tested in R1 while R2 was operated at SRT=13 d. The results indicated that the process allows complete sulphide removal to be achieved in all tested conditions. Tested sulphide loads were estimated from ...

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