ASSESSMENT OF THE FLUORIDE CONCENTRATION AND pH IN DIFFERENT MOUTHRINSES ON THE BRAZILIAN MARKET AVALIAÇÃO DO TEOR DE FLÚOR E pH EM DIFERENTES SOLUÇÕES PARA BOCHECHOS NO MERCADO NACIONAL

نویسندگان

  • Alberto Carlos Botazzo DELBEM
  • Kikue Takebayashi SASSAKI
  • Alessandra Maia de CASTRO
  • Maurício BERGAMASCHI
چکیده

n this study, the fluoride concentration and pH of 14 commercial brands of mouthrinses were assessed in order to compare them with the values expressed on the labels and with those established by the National Sanitary Surveillance Agency. Forty-two (42) products were obtained from three places, with different manufacturing batches. The fluoride concentration was determined in diluted solutions, using a combined specific electrode for fluoride ion (9609 BN Orion Research) and ion analyzer (290 A Orion Research). The results showed that 50% of the solutions had statistically significant differences, with higher fluoride concentrations than those expressed on the labels, and the pH ranged from 4.23 to 7.34, but only one of the products registered the pH value on its label.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fluoride uptake in vivo deciduous enamel of children from neutral Fluoride and APF mouthrinses.

Abstract. 173 exfoliated teeth were collected from three groups of children, age 9-10 years, who for three school years used daily one of three mouthrinses consisting of (a) 200 ppm F, 0.1 M phosphate at pH 4.0, (b) 200 ppm F at pH 7.0, or (c) a placebo rinse. The average F concentration at 5 μm in 58 placebo treated teeth was 595 ppm. After approximately 190 rinses, the average F concentration...

متن کامل

Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices

Um procedimento em batelada é proposto para separação e pré-concentração de cádmio, chumbo, níquel e zinco em amostras de salmoura. O método baseia-se na adsorção dos íons metálicos sobre a fase sólida composta de ditizona co-cristalizada com naftaleno microcristalino, na faixa de pH de 8,5 – 9,1. Ácido nítrico é utilizado para re-extrair os cátions da fase sólida, os quais são determinados por...

متن کامل

Assessment of Phenol Removal Efficiency by Synthesized Zero Iron Nanoparticles and Fe Powder Using the Response Surface Methodology

The purpose of this study was the investigation of the removal of phenol with nanoparticles zero valent iron and iron powder. The effect of various parameters such as initial concentration, pH, contact time, and dosage of NZVI and Fe powder was examined, and a Central Composite Design (CCD) was then applied to appraisal the effect of these variables. The chemical and physical characteristic...

متن کامل

Defluoridation of Aqueous Solution by Graphene and Graphene Oxide Nanoparticles: Thermodynamic and Isotherm Studies

Fluoride, a non-essential element, can enter water resources through several natural processes and human activities. The benefits and risks of fluoride depend on the concentration of this anion on drinking waters. In the present study, the performances of graphene and graphene oxide nanoparticles were investigated for the removal of fluoride from aqueous solution. In the present resea...

متن کامل

بررسی تاثیرآلومینای فعال بر غلظت فلوراید موجود در آب و تعیین ایزوترم ها و سینتیک جذب

Backgrounds and Objectives: Determination of Fluoride in drinking water has received increasing interest, duo to its beneifical and detrimental effects on health. The aim of this research is investigation of Effect of  activated alumina in fluoride concentration reduction in drinking water.Materials and Methods: Expriment in batch system and with change effective parameters such as pH(5, 7,9), ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004