A nanosilver-based spectrophotometric method for determination of malachite green in surface water samples

Abstract

A new spectrophotometric method is reported for the determination of nanomolar level of malachite green in surface water samples. The method is based on the catalytic effect of silver nanoparticles on the oxidation of malachite green by hexacyanoferrate (III) in acetate-acetic acid medium. The absorbance is measured at 610 nm with the fixed-time method. Under the optimum conditions, the linear range was 8.0 × 10(-9)-2.0 × 10(-7) mol L(-1) malachite green with a correlation coefficient of 0.996. The limit of detection (S/N = 3) was 2.0 × 10(-9) mol L(-1). Relative standard deviation for ten replicate determinations of 1.0 × 10(-8) mol L(-1) malachite green was 1.86%. The method is featured with good accuracy and reproducibility for malachite green determination in surface water samples without any pre-concentration and separation step.

A Europium-based MOF Fluorescent Probe for Efficiently Detecting Malachite Green and Uric Acid

“…Malachite green (“MG” for short) was classified in triphenylmethane compound and was utilized as a powerful antifungal reagent in aquaculture industry. , Some research reported that MG was severely poisonous to landed and aquicolous organisms. More seriously, MG endangered human health and life. , The application of MG in aquiculture or food production has been forbidden in some countries. , However, malachite green is still illegally served in fish farming due to its typical antibacterial and cheap properties.…”

“…Malachite green ("MG" for short) was classified in triphenylmethane compound and was utilized as a powerful antifungal reagent in aquaculture industry. 27,28 Some research reported that MG was severely poisonous to landed and aquicolous organisms. More seriously, MG endangered human health and life.…”

Microfluidic setup for on-line SERS monitoring using laser induced nanoparticle spots as SERS active substrate

“…Over the past decade special attention has been given to the investigation of hazardous environmental chemicals with impact on human health [ 1 – 4 ]. Surface-enhanced Raman scattering (SERS) has been proven to be a suitable tool for rapid detection of pollutants [ 3 , 5 – 8 ], based on their specific molecular fingerprint spectra [ 9 ].…”

A Terbium‐Based MOF as fluorescent probe for the detection of Malachite Green, Fe3+ and MnO4−

“…Malachite green (MG) belongs to triphenylmethane compound, used as a forceful antifungal reagent in aquaculture industry [1,2] . Some studies have shown that MG can seriously affect aquicolous organisms and human's health [3,4] .…”