The development and
increase in the number of crops recently have
led to the requirement for greater efficiency in world food production
and greater consumption of pesticides. In this context, the widespread
use of pesticides has affected the decrease in the population of pollinating
insects and has caused food contamination. Therefore, simple, low-cost,
and quick analytical methods can be interesting alternatives for checking
the quality of foods such as honey. In this work, we propose a new
additively manufactured (3D-printed) device inspired by a honeycomb
cell, with 6 working electrodes for the direct electrochemical analysis
of methyl parathion by reduction process monitoring in food and environmental
samples. Under optimized parameters, the proposed sensor presented
a linear range between 0.85 and 19.6 μmol L–1, with a limit of detection of 0.20 μmol L–1. The sensors were successfully applied in honey and tap water samples
by using the standard addition method. The proposed honeycomb cell
made of polylactic acid and commercial conductive filament is easy
to construct, and there is no need for chemical treatments to be used.
These devices based on 6 working electrodes array are versatile platforms
for rapid, highly repeatable analysis in food and environment, capable
of performing detection in low concentrations.