Determination of ammonium in river water using the combination of paper-based analytical device and smartphone app
Article Type:
Research/Original Article (دارای رتبه معتبر)

The concentration of ammonium has been greatly increased in freshwaters flowing into the coastal zone. In this paper, the combination of a paper-based analytical device (PAD) and a smartphone application (app) for on-site quantification and mapping of ammonium (NH4-N) in river water samples have been described. The developed app can capture, analyze and map the PAD colorimetric outputs. The developed app used an image processing algorithm for analyzing color intensity and relating the RGB elements to the ammonium concentration. The GPS-tagged data can be sent via social networks. Under optimized conditions, our method provided linear range between 0.2 and 10 mg L-1 with R2=0.9998. The limit of detection (LOD) of the method for quantification of ammonium was 0.10 mg L-1. The developed technique was effectively applied to determine and map the ammonium concentration in Chalus river samples (Iran). The obtained results were approved by the lab-based conventional methods using spectrophotometer.

International Journal of Coastal, Offshore and Environmental Engineering, Volume:7 Issue: 4, Autumn 2022
37 to 43  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 60 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe for 50 € euros via PayPal and download 60 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!