Table 1.

Main features of some textile and wearable sensors for pH level and Chloride ions.

	Active material	Textile support	Transduction mechanism	Sensitivity	Characterization solution	Linear range	Ref.
pH	PEDOT:BTB	Cotton, silk and polyester thread	Electrochemically gated	(13 ± 1) 10–3 pH unit−1 for Cotton	Buffer/artificial sweat	4–7	This work
	Iridium oxide film	Nylon-based conducting fabric	Potentiometric	47.54 mV/pH	Buffer/real sweat	4–8	65
	Thick film graphite-polyurethane composite	cellulose-polyester blend cloth	Potentiometric	4 mV/pH	Buffer	6–9	66
	PANi	elastomeric gold fibers woven into a textile matrix	Potentiometric	60.6 mV/pH	Buffer/artificial sweat	4–8	67
Cl	Ag/AgCl NPs	Cotton, silk and polyester thread	Electrochemically gated	(167 ± 3) 10–3 dec−1 for Cotton	Buffer/artificial sweat	10–115 mM	This work
	Ag ink	PDMS	Potentiometric	− 51.02 mV/dec−1	NaCl, artificial sweat	10–160 mM	62
	PEDOT:PSS	–	Organic electrochemical transistor	150 10–3 dec−1	PBS, artificial and human sweat	1 mM–1 M	63
	Ag NPs	PET/Gore-Tex	Voltammetric	292.2 µA M−1	Synthetic sweat	5–60 mM	64