TURLI XIL UN NAMUNALARIDAGI TEMIR MIQDORINI SPEKTROFOTOMETRIK USULDA ANIQLASH
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Mazkur tadqiqotda Jizzax shahrida keng iste’mol qilinadigan O‘zbekistonda ishlab chiqarilgan va xorijdan keltirilgan 7 turdagi un namunalarida temir elementining konsentratsiyasi spektrofotometrik usul yordamida aniqlandi va natijalar O‘zDst-3221 meyoriy hujjat bo‘yicha taqqoslandi. Eritmadagi temirni fotometrik aniqlash da reagent sifatida ortofenentrolindan foydalanildi. Tahlil natijalari shuni ko‘rsatadiki, Jizzax shahrida iste’mol qilinadigan un mahsulotlarida temir konsentratsiyasi bir xil emas. Eng yuqori miqdor 2- un namunasiga tegishli bo‘lib, bu un Jizzax viloyatida ishlab chiqarilgan. Eng quyi ko‘rsatgich 3-un namunasiga tegishli. Olingan natijalar orqali mahsulotlarning mineral tarkibi baholandi hamda iste’molchilarning oziq-ovqat xavfsizligi nuqtayi nazaridan ilmiy xulosalar chiqarildi.
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