Preparation of Cu nanoparticles with ascorbic acid by aqueous solution reduction method

2012 ◽  
Vol 22 (9) ◽  
pp. 2198-2203 ◽  
Author(s):  
Qing-ming LIU ◽  
Takehiro YASUNAMI ◽  
Kensuke KURUDA ◽  
Masazumi OKIDO
Keyword(s):  
Aqueous Solution ◽  
Ascorbic Acid ◽  
Reduction Method ◽  
Cu Nanoparticles

Effects of reaction parameters on preparation of Cu nanoparticles via aqueous solution reduction method with NaBH4

2012 ◽  
Vol 22 (12) ◽  
pp. 2991-2996 ◽  
Author(s):  
Qing-ming LIU ◽  
De-bi ZHOU ◽  
Yu-ya YAMAMOTO ◽  
Kensuke KURUDA ◽  
Masazumi OKIDO
Keyword(s):  
Aqueous Solution ◽  
Reduction Method ◽  
Cu Nanoparticles ◽  
Reaction Parameters

scholarly journals Spectrophotometric determination of phosphorus in coal and coal ash using bismuth-phosphomobybdate complex

2003 ◽  
Vol 68 (1) ◽  
pp. 65-73 ◽  
Author(s):  
Randjel Mihajlovic ◽  
Natasa Ignjatovic ◽  
Marija Todorovic ◽  
Ivanka Holclajtner-Antunovic ◽  
Vesna Kaljevic
Keyword(s):  
Aqueous Solution ◽  
Ascorbic Acid ◽  
Acid Medium ◽  
Spectrophotometric Method ◽  
Methyl Ketone ◽  
Coal Ash ◽  
Molar Absorptivity ◽  
Stable Complex ◽  
Tolerance Limits

A modified spectrophotometric method using the bismuth phosphomolybdate complex for the determination of phosphorus in coal and coal ash is suggested. Bismuth together with phosphate and molybdate forms a very stable complex in acid medium which turns blue ("molibdenum blue") by reduction with ascorbic acid. The apparent molar absorptivity of PBiMo is 1.66x104 dm3 mol-1cm-1 at 720 nm and 2.10x104 dm3 mol-1cm-1 at 670 nm isobutyl methyl ketone (MIBK). Interference caused by the ions present are within the tolerance limits (?2 %). Beer?s law is obeyed in the for concentration range to 0.6 ?g/mL (aqueous solution) and to 1.2 ?g/mL P (MIBK). The sensitivity of the proposed method is 0.0078 ?g/mL (aqueous solution) and 0.0066 ?g/mL (MIBK).

Rate of Anaerobic Degradation of Ascorbic Acid in Aqueous Solution

1963 ◽  
Vol 52 (10) ◽  
pp. 948-954 ◽  
Author(s):  
Per Finholt ◽  
Rolf B. Paulssen ◽  
Takeru Higuchi
Keyword(s):  
Aqueous Solution ◽  
Ascorbic Acid ◽  
Anaerobic Degradation

scholarly journals Effect of Various Halide Salts on the Incompatibility of Cyanocobalamin and Ascorbic Acid in Aqueous Solution

2005 ◽  
Vol 53 (6) ◽  
pp. 688-690 ◽  
Author(s):  
Makoto Ichikawa ◽  
Nagatoshi Ide ◽  
Sumihiro Shiraishi ◽  
Kazuhisa Ono
Keyword(s):  
Aqueous Solution ◽  
Ascorbic Acid ◽  
Halide Salts
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