Determination of nitrate

Lentic systems are a diverse set of inland freshwater habitats (Lakes and ponds) exist across the globe and provide essential resources and habitats for both terrestrial and aquatic organisms. The current work was intended to evaluate the quality of the selected ponds (Pond 1, 2 and 3) in and around Vellore district, TamilNadu. The water samples were collected to determine the physical and chemical parameters during every month in the year 2019. Water parameters such as temperature, pH, dissolved oxygen, Alkalinity, electrical conductivity, Chloride, Sulphate, Nitrate, Ca, Cl was studied.

10p angicungduoc6 22-07-2020 26 2   Download

In this report, the experimental results determine the influence of urea concentration and the initiating combustion temperature on luminescent properties and structure of BaMgAl10O17: Eu2+ phosphors prepared by urea - nitrate solution combustion synthesis.

5p thiendiadaodien_9 04-03-2019 16 0   Download

TCVN 7323-1:2004 tiêu chuẩn về chất lượng nước, xác định nitrat phần 1 "Phương pháp đo phổ dùng 2,6-dimethylphenol". TCVN 7323-1:2004 do Ban kỹ thuật Tiêu chuẩn TCVN/TC 147 chất lượng nước biên soạn, Tổng cục Tiêu chuẩn Đo lường Chất lượng đề nghị, Bộ Khoa học và Công nghệ ban hành. Mời các bạn cùng tham khảo.

6p phuongdung1308 15-10-2015 67 7   Download

We developed the synthesis of the caged oxygen donor (l-peroxo)(l-hydroxo)bis[bis(bipyridyl)cobalt(III)] complex (HPBC) as nitrate salt,which has,compared with the perchlorate-form described previously [MacArthur,R., Sucheta,A.,Chong,F.F. & Einarsdottir,O¨ . (1995) Proc. Natl Acad. Sci. USA, 92,8105–8109],greatly enhanced solubility. Now,the quantum efficiency of the photolytical release of dioxygenwas determined tobe 0.4 per photon at a laser wavelength of 308 nm,which was used to observe biological reactions....

8p research12 29-04-2013 47 3   Download

Field and laboratory studies were conducted to evaluate the use of bacterial growth on aquatic insects as a metric for determining the existence of nutrient impacts in wetlands. Results from field investigations indicated that elevated concentrations of nitrate and phosphate...

10p nhoxden_20101991 13-06-2011 96 8   Download

Introduction: Determination of methemoglobin (Met-Hb) in blood is important for the diagnosis of poisoning by oxidants, such as nitrite, nitrate, chlorate, chlorite, alkyl nitrites, nitroglycerin, aniline and other compounds. In 1938, Evelyn and Malloy [1] had devised a photoelectric method for determination of Met-Hb in blood. Minor modifications of this method were made by several researchers to increase sensitivity [2–4]. These methods are based on a phenomenon that the absorbance maximum of weakly acidic Met-Hb at 630 nm disappears by addition of cyanide.

17p bigbaby87 01-09-2010 162 15   Download