Fluorometric method for the determination of residues of 1-naphthaleneacetamide and 1-naphthaleneacetic acid on apples

Abstract

Mass spectra were: m/e 50 (10%), 51 (18%), 65 (8%), 69 (36%), 79 (18%), 121 (17%), 149 (39%), 164 (21%), 177 (55%), 178 (6%), and 192 (100%), and corrected emission 143 (1971).

Precisely controlled delivery of plant hormone using poly(vinyl alcohol)/zeolite A hydrofilm composite

“…[ 4 ] Being used as spray, concentration of 20–100 mg/L is sufficient for biological effects depending on plant types. [ 5 ] Excessive NAA in agricultural uses can leach into groundwater and soil, resulting in uncontrollable adverse environmental impacts. Toxicology of NAA has been studied and reported to be harmful to animal and human health.…”

“…Many research studies have studied a great number of materials for controlled release of NAA including copolymer of allyl‐1‐naphthylacetate with acrylamide, [ 3 ] NAA derivative in the form of o ‐naphthylacetyl chitosan, [ 5 ] NAA ester based on polyacrylate, [ 9 ] NAA–silica‐conjugated nanospheres, [ 10 ] nonporous plate‐like structure made from inorganic Zn–Al‐layered double hydroxide (LDH), [ 3 ] calcium alginate gel beads coated with poly(ethylene imine) (PEI), [ 11 ] and chitosan microspheres. [ 12 ] Although these materials exhibited effective controlled release of NAA, they were mostly prepared using toxic solvents, corrosive chemicals, and complicated time‐consuming process.…”

Determination of naphthalene-derived compounds in apples by ultra-high performance liquid chromatography-tandem mass spectrometry

“…In the 70s and 80s, direct fluorescence analysis, without any previous chromatographic separation, was used for the determination of ␣-NAA and NAD [8,9]. Afterwards direct phosphorescence was also employed not only for the acid and the amide but also for ␤-NOA [10][11][12][13].…”

Photochemical Degradation of the Plant Growth Regulator 2‐(1‐Naphthyl) acetamide in Aqueous Solution Upon UV Irradiation

“…In addition to fluorescence techniques (13,14), several other methods have been proposed for the determination of NAD residues in food, plants, vegetables and water samples, including phosphorescence (15)(16)(17)(18)(19)(20)(21)(22) and chromatography (23,24). However, there is little research concerning the fate of this compound in water, and this has, therefore, stimulated our interest in investigating its behavior to seek possible routes toward environmental remediation.…”