Development of formaldehyde sensing element using porous glass impregnated with Schiff's reagent

Preparation of platinum nanoparticles on polyaniline-coat multi-walled carbon nanotubes for adsorptive stripping voltammetric determination of formaldehyde in aqueous solution

“…1.13 9 10 -4 C(M) (R = 0.999; LOD = 2.1 9 10 -10 M, 3 9 r; SOD = 1.13%, n = 5). Table 1 summaries the results of various method for HCHO sensing [4][5][6][7][8][29][30][31][32]. In comparison with the reported results such as biosensors, semiconductor sensors, and odor sensor, the present work shows a better sensitivity (Table 2).…”

Synthesis of Polymer Sensor for Detection of Phosphate in Water

“…This approach would provide a number of advantages such as field portability, visual qualitative feedback, rapid detection, and ease of handling [14], [15]. It is typically based on entrapment or impregnation of a colorimetric reagent within various materials, such as a sol-gel matrix [16], porous glass [14], or molecularly imprinted polymer [17].…”

Monitoramento do corante pararosanilina em amostras biológicas

“…O monitoramento espectrofotométrico de SO 2 pode ser alcançado através de sua conversão a um cromóforo produzido com o corante [15][16][17][18][19][20]. De forma similar, a aplicação de protocolos experimentais apropriados, capacita a análise de distintos compostos, tais como, ácido pícrico, sacarina, fenil butazona e a droga Probenecida [21], metanol [22], bromato [23,24], brometo [25], SO 3 -2 [26,27], Formaldeido [28][29][30][31][32][33][34][35], H 2 S [36][37][38], o pesticida organoclorado endosulfano [39], substancias tensoativas [40], os metais ouro [41] e Paládio [42].…”