Individual sample conditioning in flow analysis. Determination of N-total in plant materials

2000 ◽  
Vol 368 (5) ◽  
pp. 496-500 ◽  
Author(s):  
J. M. T. Carneiro ◽  
R. S. Honorato ◽  
E. A. G. Zagatto
Keyword(s):  
Flow Analysis ◽  
Individual Sample ◽  
Plant Materials ◽  
Analysis Determination

“Reagentless” Flow Analysis Determination of Hydrogen Peroxide by Electrocatalyzed Luminol Chemiluminescence

1997 ◽  
Vol 30 (1) ◽  
pp. 21-31 ◽  
Author(s):  
James E. Atwater ◽  
James R. Akse ◽  
Jeffery DeHart ◽  
Richard R. Wheeler
Keyword(s):  
Hydrogen Peroxide ◽  
Flow Analysis ◽  
Luminol Chemiluminescence ◽  
Analysis Determination

Sequential analyte removal in flow analysis: determination of nitrogen, phosphorus and potassium in fertilizers

1995 ◽  
Vol 317 (1-3) ◽  
pp. 239-245 ◽  
Author(s):  
Patricia Benedini Martelli ◽  
JoséAnchieta Gomes Neto ◽  
Elias Ayres G. Zagatto ◽  
Sandra M.Boscolo Brienza ◽  
M.Conceição B.S.M. Montenegro ◽  
...  
Keyword(s):  
Flow Analysis ◽  
Phosphorus And Potassium ◽  
Analysis Determination ◽  
Nitrogen Phosphorus

INVESTIGATION OF THE COMPOSITION OF MOSS, WHICH IS A NATURAL BIOINDICATOR, FOR AIR MONITORING IN THE EAST KAZAKHSTAN REGION

2019 ◽  
pp. 19-25
Author(s):  
N.M. Omarova ◽  
A.K. Tashenov ◽  
M.U. Nurkassimova ◽  
A.K. Kokoraeva
Keyword(s):  
Inductively Coupled Plasma ◽  
Photometric Determination ◽  
Plant Materials ◽  
Inductively Coupled ◽  
Icp Ms ◽  
East Kazakhstan ◽  
Plasma Mass Spectrometry ◽  
Wet Ashing ◽  
Analysis Determination

Here are the results of determining the chemical composition of moss in the East Kazakhstan region. The following research stages were carried out: harvesting plant materials; methods of taking samples of the studied material for analysis; determination of the concentration of elements by inductively coupled plasma mass spectrometry (ICP-MS). Developed methods for dry and wet ashing bioindicator. The results of the analysis of moss obtained by the ICP-MS method and the instrumental neutron activation analysis (INAA) method are compared. The reliability of the results of the analysis by the method of additives and photometric determination of the concentration of elements was determined.

A new strategy for membraneless gas-liquid separation in flow analysis: Determination of dissolved inorganic carbon in natural waters

2019 ◽  
Vol 145 ◽  
pp. 1218-1223 ◽  
Author(s):  
Milton K. Sasaki ◽  
Pedro A.F. Souza ◽  
Marcos Y. Kamogawa ◽  
Boaventura F. Reis ◽  
Fábio R.P. Rocha
Keyword(s):  
Natural Waters ◽  
Inorganic Carbon ◽  
Dissolved Inorganic Carbon ◽  
Flow Analysis ◽  
Liquid Separation ◽  
New Strategy ◽  
Analysis Determination

scholarly journals A Highly Sensitive Multicommuted Flow Analysis Procedure for Photometric Determination of Molybdenum in Plant Materials without a Solvent Extraction Step

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Felisberto G. Santos ◽  
Boaventura F. Reis
Keyword(s):  
Solvent Extraction ◽  
Sampling Rate ◽  
Flow Analysis ◽  
Reference Method ◽  
Photometric Determination ◽  
Plant Materials ◽  
Photometric Detection ◽  
Extraction Step ◽  
Highly Sensitive

A highly sensitive analytical procedure for photometric determination of molybdenum in plant materials was developed and validated. This procedure is based on the reaction of Mo(V) with thiocyanate ions (SCN−) in acidic medium to form a compound that can be monitored at 474 nm and was implemented employing a multicommuted flow analysis setup. Photometric detection was performed using an LED-based photometer coupled to a flow cell with a long optical path length (200 mm) to achieve high sensitivity, allowing Mo(V) determination at a level of μg L−1 without the use of an organic solvent extraction step. After optimization of operational conditions, samples of digested plant materials were analyzed employing the proposed procedure. The accuracy was assessed by comparing the obtained results with those of a reference method, with an agreement observed at 95% confidence level. In addition, a detection limit of 9.1 μg L−1, a linear response (r=0.9969) over the concentration range of 50–500 μg L−1, generation of only 3.75 mL of waste per determination, and a sampling rate of 51 determinations per hour were achieved.

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