2010
DOI: 10.1016/j.aca.2010.04.063
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Use of constrained mixture design for optimization of method for determination of zinc and manganese in tea leaves employing slurry sampling

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Cited by 30 publications
(15 citation statements)
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“…The vegetable leave samples were acquired in supermarkets of the city of Jequié (Brazil), and quickly washed with deionized water. Then, these samples were dried at 80°C, ground in a SPEX 8000 M ball mill (Spex Sample Prep, USA) with a tungsten carbide vial set and tungsten carbide ball, and sifted to obtain particles smaller than 100 μm [22].…”
Section: Sample Preparationmentioning
confidence: 99%
“…The vegetable leave samples were acquired in supermarkets of the city of Jequié (Brazil), and quickly washed with deionized water. Then, these samples were dried at 80°C, ground in a SPEX 8000 M ball mill (Spex Sample Prep, USA) with a tungsten carbide vial set and tungsten carbide ball, and sifted to obtain particles smaller than 100 μm [22].…”
Section: Sample Preparationmentioning
confidence: 99%
“…For example, in mixture design, the basic assumption is that the response of interest can be approximated sufficiently well by a polynomial equation. However, the factors can have some constraints (27)(28)(29)(30)(31). Sometimes, an experimenter may need to reduce the number of runs recommended by a standard design.…”
Section: Further Designsmentioning
confidence: 99%
“…18 The use of constraints is justified, since the presence of three components is always necessary for emulsion formation and posterior extraction. Table 1 presents low and high constraints established for each component.…”
Section: Optimization Of Emulsion Breaking Extractionmentioning
confidence: 99%