Water quality. Determination of chromium (VI). Photometric method for weakly contaminated water

2006 ◽  
Keyword(s):  
Water Quality ◽  
Photometric Method ◽  
Contaminated Water ◽  
Chromium Vi

scholarly journals Analisa Kadar Kromium VI [Cr (VI)] Air di Kecamatan Tanggulangin, Sidoarjo

2017 ◽  
Vol 1 (2) ◽  
pp. 55
Author(s):  
Ary Andini
Keyword(s):  
Water Quality ◽  
Water Sample ◽  
Water Samples ◽  
System Error ◽  
Oil Drilling ◽  
Standard Curve ◽  
Chromium Vi ◽  
Drilling System

Tanggulangin is one of the sub-districts in Sidoarjo district affected by Lapindo mudflow caused by oil drilling system error located in the area of Siring, Porong. Therefore it had impacted the water quality in around Lapindo mudflow area. The aim of this research was to analysis the levels of water Cr (VI) Tanggulangin district. Water sample was analyzed by spectrophotometer with wavelength of 540 nm and done using two (2) steps ,which were(1) establishment of standard curve and (2) determination of Cr (VI) in water. Ten (10) water samples were taken from various villages in the subdistrict Tanggulangin. Based on the results on level of water chromium VI [Cr (VI)] analyze showed 4 of 10 samples had levels of water Cr (VI)higher than standard 0,05 mg/L (PP No.82 tahun 2001), those sample were 1, 3,4 and 10.

scholarly journals Simultaneous Spectrophotometric Determination of Chromium(VI) and Vanadium(V) by using 3,4-Dihydroxybenzaldehyde isonicotinoyl hydrazone (3,4-DHBINH)

2009 ◽  
Vol 6 (s1) ◽  
pp. S459-S465 ◽  
Author(s):  
Lakshmi Narayana ◽  
Suvarapu ◽  
Adinarayana Reddy Somala ◽  
Prathima Bobbala ◽  
Hwang Inseong ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Metal Ions ◽  
Sodium Acetate ◽  
Atomic Absorption Spectrophotometry ◽  
Photometric Method ◽  
Sodium Acetate Buffer ◽  
Absorption Spectrophotometry ◽  
Chromium Vi ◽  
Highly Sensitive

A simple, rapid, highly sensitive and new simultaneous spectro- photometric method is proposed for the analysis of chromium(VI) and vanadium(V) without separation by using 3,4-dihydroxybeznaldehyde isonicotinoyl hydrazone (3,4-DHBINH). The reagent reacts with the two metal ions in acetic acid-sodium acetate buffer of pH 5.5 and gives maximum absorbances at 400 nm and 360 nm for chromium(VI) and vanadium(V), respectively. Both the metal ions gives 1: 1 (M:L) complexes with the reagent. Effect of various diverse ions also studied. The instability constants for the two complexes were also evaluated. This method was successfully applied for the determination of chromium(VI) and vanadium(V) in various spiked samples. The validity of the method was checked by comparing with the results obtained by atomic absorption spectrophotometry.

Determination of extractable chromium(vi) in soils using a photometric method

Chemosphere ◽  
1999 ◽  
Vol 39 (4) ◽  
pp. 697-708 ◽  
Author(s):  
H. Rüdel ◽  
K. Terytze
Keyword(s):  
Photometric Method ◽  
Chromium Vi

Colorimetric Determination of Amoxicillin in Pure and some Pharmaceutical Formulations Via Reaction with Potassium Permanganate as Oxidant Reagent

2019 ◽  
Vol 10 (02) ◽  
Author(s):  
Abbas Shebeeb Al-kadumi ◽  
Sahar Rihan Fadhel ◽  
Mohammed Abdullah Ahmed ◽  
Luma Amer Musa
Keyword(s):  
Potassium Permanganate ◽  
Pharmaceutical Preparations ◽  
Pharmaceutical Formulations ◽  
Atomic Emission ◽  
Basic Medium ◽  
Photometric Method ◽  
Colorimetric Determination ◽  
Spectrophotometric Methods ◽  
Label Claim

We proposed two simple, rapid, and convenient spectrophotometric methods are described for the determination of Amoxicillin in bulk and its pharmaceutical preparations. They are based on the measurement of the flame atomic emission of potassium ion (in first method) and colorimetric determination of the green colored solution for manganite ion at 610 nm formed after reaction of Amoxicillin with potassium permanganate as oxidant agent (in the second method) in basic medium. The working conditions of the methods were investigated and optimized. Beer's law plot showed a good correlation in the concentration range of 5-45 μg/ml. The detection limits and relative standared deviations were (2.573, 2.814 μg/ml) (2.137, 2.498) for the flame emission photometric method and (1.844, 2.016 μg/ml) (1.645,1.932) for colorimetric methods for capsules and suspensions respectively. The methods were successfully applied to the determination of Amoxicillin in capsules and suspensions, and the obtained results were in good agreement with the label claim. No interference was observed from the commonly encountered additives and expectancies.

Sign in / Sign up

Export Citation Format

Share Document