Determining Nitrate and Nitrite Content in Beverages, Fruits, Vegetables, and Stews Marketed in Arak, Iran

Table 4

Characteristics of the analytical method for nitrate and nitrite.

	Calibration curve			Linearity (mg kg^−1)	LOD (mg kg^−1)	LOQ (mg kg^−1)	Recovery (%)
Beverage	Nitrate	= +		2.5–15			95–101
	Nitrite	= +		2.5–15			98–109
Fruit	Nitrate	= +		2.5–15			91–99
	Nitrite	= −		2.5–15			97–104
Vegetable	Nitrate	= +		2.5–15			90–96
	Nitrite	= −		2.5–15			98–102
Stew	Nitrate	= +		2.5–15			89-90
	Nitrite	= −		2.5–15			92–96