Sensitive voltammetric determination of herbicide terbutryn using solid electrodes based on silver amalgam and boron-doped diamond

Transport and material handling is a sum of technological processes in the wood-processing industry. Hydraulic drives are one of the drive options used as a basic part of the transport – handling machines. Contamination control involves preventing contaminants from entering a hydraulic system and placing filters in strategic locations throughout the system to trap any contaminants to find their way into the fluid. But for critical equipment, a successful contamination control program must also include regular assessment of the hydraulic fluid cleanliness. It must be often done every two to six months or after every 500 or 1,000 hours of operation, depending on the equipment duty cycle, operating environment, and how critical it is to overall operation. Pressure forces in hydraulic drives are transferred to hydraulically-operated devices which also serve to lubricate the elements, displace and remove heat from the system. To increase the service life of hydraulic drives, hydraulic oil must meet individual physical characteristics. To ensure reliability, timely diagnosis of hydraulic oil is required. Some experts also recommend that fluid to be tested immediately after any maintenance event that exposes the hydraulic system to the external environment. This could occur when a hose or other component is replaced or fluid is added to the reservoir. Fluid replenishment can be particularly troublesome because new fluid is notorious for being dirty – often from improper storage and handling practices. The article deals with the methodology of measuring the basic physical properties of hydraulic oil by the respective diagnostic devices directly on the hydraulic drive of the bend saw in the full operation of the machine. The methodology suggested enables making decisions for improvement of the hydraulic oil state.

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“…Přehled pesticidů, jež byly na našem pracovišti analyzovány, je uveden v tabulce 1 (cit. [28][29][30][31][32][33][34][35][36][37][38] ).…”

Section: Výsledky a Diskuseunclassified

Analysis of the hydraulic oil to drive band sawmill

Krilek

Kovach

Kuvik

et al. 2019

SBUNFU

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“…Similar electrochemical reaction probably plays a role in the determination of ethiofencarb and terbutryn (Fig. K) . Here, however, reduction of C=N double bond in heterocyclic ring can play a role as well.…”

Section: Overview Of Electrochemically Reducible Pesticidesmentioning

confidence: 99%

“…R) , fenoxaprop‐P‐ethyl (Fig. S) , azinphos‐ethyl insecticide , and probably terbutryn as well . Reduction of C=N bond in a heterocyclic ring shows a single irreversible cathodic peak.…”

Section: Overview Of Electrochemically Reducible Pesticidesmentioning

confidence: 99%

Recent Applications of Mercury Electrodes for Monitoring of Pesticides: A Critical Review

et al. 2016

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Voltammetric determination of leucovorin in pharmaceutical preparations using a boron-doped diamond electrode

et al. 2018

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Method for voltammetric determination of leucovorin, a drug frequently applied to decrease some unfavorable effects of anticancer drugs such as methotrexate or to increase the therapeutic effect of 5-fluorouracil, has been developed employing a bare boron-doped diamond electrode. It is the first method for leucovorin determination based on its electrochemical oxidation. Although at least three anodic and three cathodic voltammetric peaks could be recorded under the used conditions, only the anodic response situated at about ? 900 mV (vs. saturated Ag|AgCl electrode) was suitable, namely due to its shape and position, for analytical purposes. Using differential pulse voltammetry with optimized parameters and supporting electrolyte of pH 3, the linear dynamic range of leucovorin determination was recorded from 0.15 to 25 lmol dm-3. Under such conditions, low limit of quantification of 0.050 lmol dm-3 and limit of detection of 0.015 lmol dm-3 as well was reached. Relative standard deviation calculated from 11 repeated measurements amounted to 0.7% and calculated from five repeated determinations amounting less than 3.0%. Applicability of the developed method was verified by repeated analysis of the pharmaceutical preparation with excellent results (recovery 98.7-102.8%, relative standard deviation 1.81%).

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Sensitive voltammetric determination of herbicide terbutryn using solid electrodes based on silver amalgam and boron-doped diamond

Cited by 7 publications

References 44 publications

Analysis of the hydraulic oil to drive band sawmill

Analysis of the hydraulic oil to drive band sawmill

Recent Applications of Mercury Electrodes for Monitoring of Pesticides: A Critical Review

Voltammetric determination of leucovorin in pharmaceutical preparations using a boron-doped diamond electrode

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