An In-Situ Soil Nitrate Nitrogen Detection System based on Ion-selective Electrode

2019 ◽  
Author(s):  
Ming Chen ◽  
Miao Zhang ◽  
Qingliang Yang ◽  
Lan Yao ◽  
Xuming Wang
Keyword(s):  
Nitrate Nitrogen ◽  
Detection System ◽  
Ion Selective Electrode ◽  
Soil Nitrate ◽  
Selective Electrode ◽  
Nitrogen Detection

scholarly journals In-Field Measurement of Soil Nitrate Using an Ion-Selective Electrode

10.5772/8741 ◽  
2010 ◽  
Author(s):  
Kevin J. ◽  
Gordon R. ◽  
Tessema Astatkie ◽  
John F. ◽  
Paul C.
Keyword(s):  
Field Measurement ◽  
Ion Selective Electrode ◽  
Soil Nitrate ◽  
Selective Electrode

Spectroscopic in Situ Imaging of Acid Coextraction Processes in Solvent Polymeric Ion-Selective Electrode and Optode Membranes

1998 ◽  
Vol 70 (6) ◽  
pp. 1176-1181 ◽  
Author(s):  
Ernö Lindner ◽  
Titus Zwickl ◽  
Eric Bakker ◽  
Bui Thi Thu Lan ◽  
Klara Tóth ◽  
...  
Keyword(s):  
Ion Selective Electrode ◽  
Selective Electrode ◽  
In Situ Imaging

scholarly journals An ISE-based On-Site Soil Nitrate Nitrogen Detection System

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4669 ◽  
Author(s):  
Yanhua Li ◽  
Qingliang Yang ◽  
Ming Chen ◽  
Maohua Wang ◽  
Miao Zhang
Keyword(s):  
Sample Preparation ◽  
Nitrate Nitrogen ◽  
Detection System ◽  
Operation Time ◽  
Spectrometric Method ◽  
Prototype System ◽  
Soil Nitrate ◽  
Fusion Model ◽  
Soil Slurry ◽  
Field Detection

Soil nitrate–nitrogen (NO3−-N) is one of the primary factors used to control nitrogen topdressing application during the crop growth period. The ion-selective electrode (ISE) is a promising method for rapid lower-cost in-field detection. Due to the simplification of sample preparation, the accuracy and stability of ISE-based in-field detection is doubted. In this paper, a self-designed prototype system for on-site soil NO3−-N detection was developed. The procedure of spinning centrifugation was used to avoid interference from soil slurry suspension. A modified Nernstian prediction model was quantitatively characterized with outputs from both the ISE and the soil moisture sensor. The measurement accuracy of the sensor fusion model was comparable with the laboratory ISE detections with standard sample pretreatment. Compared with the standard spectrometric method, the average absolute error (AE) and root-mean-square error (RMSE) were found to be less than 4.7 and 6.1 mg/L, respectively. The on-site soil testing efficiency was 4–5 min/sample, which reduced the operation time by 60% compared with manual sample preparation. The on-site soil NO3−-N status was dynamically monitored for 42 consecutive days. The declining peak of NO3−-N was observed. In all, the designed ISE-based detection system demonstrated a promising capability for the dynamic on-site monitoring of soil macronutrients.

CdS-Intercalated Bentonite: A Novel Sulfide Ion Selective Electrode

2011 ◽  
Vol 110-116 ◽  
pp. 472-477 ◽  
Author(s):  
Kemawadee Udomphan ◽  
Atchana Wongchaisuwat ◽  
Ladda Meesuk
Keyword(s):  
Carboxymethyl Cellulose ◽  
Low Cost ◽  
Ion Selective Electrode ◽  
Good Precision ◽  
Selective Electrode ◽  
Solid Reaction ◽  
Artificial Graphite ◽  
Sulfide Ion

CdS-intercalated bentonite was prepared by an in situ solid-solid reaction and mixed with artificial graphite, polytetrafluoroethylene (PTFE) and carboxymethyl cellulose (CMC) in an appropriate ratio to construct a novel, potentiometric sulfide ion selective electrode. Apart from its good selectivity, the electrode is low cost and good precision.

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