نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه شیمی، دانشگاه پیام نور، ص.پ. ،57271-7079تهران، ایران

2 بخش شیمی دانشگاه پیام نور تهران، ایران

چکیده

فعالیت های آموزشی نظامی یک نگرانی جدی برای سازمان های دفاعی در سراسر جهان است. این فعالیت‌ها، با هدف قرار دادن خاک‌های زیرزمینی، آلاینده های زیست محیطی هستند، از طرف دیگر تامین آب آشامیدنی مناسب برای نیروهای صحرایی تنها یکی از وظایف نظامی متعدد و متنوع رسته مهندسی است. لذا بررسی آلاینده های مختف در آب مورد نیاز محیطهای دفاعی ضروری است. در این پژوهش، یک نوع جدیدی از روش رنگ سنجی در دسترس، سریع، بسیار حساس و انتخابی برای تشخیص یون سولفید با استفاده از یک کمپلکس مبتنی بر مخلوط فلزی لیگاندها ارائه شده است. در این مطالعه،کمپلکس کاتیون روی با رنگ اریوکروم بلک تی و ترکیب کمپلکس ایجاد شده با رنگ اریتروسین EBT-Zn2+-ERS برای اولین بار به عنوان حسگر آنیونی سولفید پیشنهاد شد. محدوده خطی برای سولفید 92/85-20/0 میکرومولار و ضریب همبستگی آن 9917/0 می­باشد. همچنین حد تشخیص روش 04/0 میکرومولار و انحراف نسبی در دو غلظت 0/38 و 0/69 میکرومولار به ترتیب 64/1 و 84/0 درصد بدست آمد.روش ارائه شده،  با موفقیت برای تعیین سریع یون های سولفید در نمونه های آب آشامیدنی پادگان نظامی، آب معدنی و آب دریاچه مهارلو استفاده شد. این روش در محیط آبی بدون استفاده از حلال های شیمیایی، که آلاینده محیط زیست هستند، انجام شده و حد تشخیص این روش در مقایسه با روش های قبلی انجام شده، کمتر است، لذا چشم‌انداز خوبی در زمینه‌های بررسی آلاینده های مختلف در محیطهای دفاعی پیشنهاد می گردد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Design and development of a simple, sensitive, selective and new colorimetric chemosensor based on a metal complex of mixed ligands for determining sulfide anion with the ability to use defense

نویسندگان [English]

  • Hosain Tavallali 1
  • Raziyeh Karimi Nejad Ghasroddashti 2
  • Abolfath Parhami 2
  • Vahid Tavallali 2

1 Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran

2 Department of Chemistry, Payame Noor University, Tehran,, Iran.

چکیده [English]

Military training activities are a serious concern for defense organizations around the world. These activities, targeting underground soils, are environmental pollutants. On the other hand, providing suitable drinking water for the field forces is only one of the engineering department’s numerous and diverse military duties. Therefore, it is necessary to investigate the various pollutants in the water that Defense environments need to explore.
In this research, a new type of available, fast, highly sensitive, and selective colorimetric method for the determination of sulfide ions using a complex based on a metal mixture of ligands is presented. In this study, the Zn2+ complex with Eriochrome Black T dye (EBT) and the complex formed with erythrosine dye (ERS) was proposed (EBT-Zn2+-ERS) as a sulfide anion chemosensor for the first time. The linear range of sulfide is 0.20-92.85 µmol/L and its correlation coefficient is 0.9917. Also, the method's detection limit was 0.04 μmol/L, and the relative deviation in two concentrations of 0.38 and 0.69 μmol/L was 1.64 and 0.84%, respectively. The presented method was successfully used the rapidly determine of sulfide ions in samples of drinking water from military barracks, mineral water, and Maharlo Lake water.
This method is less expensive than previous methods, and is recommended for various fields in defense environments.

کلیدواژه‌ها [English]

  • Colorimetric Chemosensor
  • Eriochrome Black T
  • Erythrosine
  • Sulfide ions
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