Calcination and Wet Digestion as Sample Preparation Methods for Nickel Determination in Agronomic Stuffs: Technical Note - Salazar, Rodrigo Fernando dos Santos; Alcântara, Marco Aurélio Kondracki de; Salazar, Ludmila Noskoski; Zamberlan, João Fernando; Bortolotto, Rafael Pivotto; Izario Filho, Hélcio José (Cutting-edge Research in Agricultural Sciences, 2020)