From: Recent trends of copper detection in water samples
Sensor
Water source
pH
Detection limit
References
Electrochemical
Water
1–6
2.5 μg L−1
Romero-Cano et al. (2019)
Colorimetric
Tap water
10.8
1.5 μg L−1
Ma et al. (2011)
Optical Fiber Chemical
Drinking water
2
0.02 µg L−1
Pesavento et al. (2019)