Title A novel ionic liquid/micro-volume back extraction procedure combined with flame atomic absorption spectrometry for determination of trace nickel in samples of nutritional interest Type Article Keywords A novel ionic liquid/micro-volume back extraction procedure combined with flame atomic absorption spectrometry for determination of trace nickel in samples of nutritional interest Abstract A novel ionic liquid/micro-volume back extraction procedure combined with flame atomic absorption spectrometry for determination of trace nickel in samples of nutritional interest Researchers Shayessteh Dadfarnia (First researcher)Mahboube Shirani (Second researcher)Ali Mohammad Haji Shabani (Third researcher)abbas ali jafari (Fourth researcher)