Hydrogen-Bonding Recognition-Induced Colorimetric Determination of Hydrazine Based on the Tryptophan Capped Gold Nanoparticles

Table 2

Application of the proposed method to determination of hydrazine in real water samples spiked with different amounts of hydrazine.

Sample	Concentration of hydrazine hydrate (×10^−6 M)
	Amount added	Amount found^a	Recovery (%)
Tap water	75.7	75.7±3.32	100
	757	764±35.54	101
Lake water	75.7	77.7±4.76	103
	757	780±46.83	103
Sea water	75.7	81.7±6.42	108
	757	785±50.88	104

aAverage value of three determinations ± standard deviation.