Preparation and Certification of the New Reference Materials, River Waters (JSAC 0301-1, JSAC 0301-2, JSAC 0302) for Determination of Inorganic Components
نویسندگان
چکیده
منابع مشابه
Multielement determination of trace metals in river water (certified reference material, JSAC 0301-1) by high efficiency nebulization ICP-MS after 100-fold preconcentration with a chelating resin-packed minicolumn.
The determination of 34 trace metals in a river water certified reference material (CRM), i.e. JSAC 0301-1, which was issued by the Japan Society for Analytical Chemistry in January 2004, was performed by ICP-MS with a high efficiency nebulizer after preconcentration with a laboratory-made chelating resin-packed minicolumn, with which trace metals were concentrated 100-fold from 50 mL of a rive...
متن کاملOn-line preconcentration method for the determination of trace metals in water samples using a fully automated pretreatment system coupled with ICP-AES.
An automated on-line sample-preparation method using a computer-controlled pretreatment system (Auto-Pret AES system) coupled with ICP-AES was developed. In this work, an iminodiacetate chelating resin, packed in a mini-column and installed in the system was employed for the collection/concentration of 13 trace metals, including such toxic metals as Be, Cd, Cr, Cu and Pb. The limits of detectio...
متن کاملJsac Special Issue on Network Support for Group Communication
| We introduce and analyze a scalable re-keying scheme for implementing secure group communications IP multicast. We show that our scheme incurs constant processing , message, and storage overhead for a re-key operation when a single member joins or leaves the group, and logarithmic overhead for bulk simultaneous changes to the group membership. These bounds hold even when group dynamics are no...
متن کاملDevelopment of Plastic Certified Reference Materials for XRF analysis (JSAC 0611-0615) containing Pb, Cd, Cr; Part 1. Sample Preparation and Homogeneity test
New plastic certified reference materials (CRMs) with Pb, Cd and Cr for XRF analysis have been developed in cooperation with the Japan Society for Analytical Chemistry. These CRMs (named as JSAC 0611 – 0615) were prepared by casting polyester including a toluene solution of organometallic compounds as a standard. The disk was removed from the glass plate after 12 h of hardening at room temperat...
متن کاملtechnical and legal parameters for determination of river boundary,( case study haraz river)
چکیده با توسعه شهر نشینی و دخل و تصرف غیر مجاز در حریم رودخانه ها خسارات زیادی به رودخانه و محیط زیست اطراف آن وارده می شود. در حال حاضر بر اساس آئین نامه اصلاح شده بستر و حریم رودخانه ها، حریم کمی رودخانه که بلافاصله پس از بستر قرار می گیرد از 1 تا20 متر از منتهی الیه طرفین بستر رودخانه تعیین، که مقدار دقیق آن در هر بازه از رودخانه مشخص نیست. در کشورهای دیگر روشهای متفاوتی من جمله: درصد ریسک...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 2006
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.55.875