LaMotte SMART3 Colorimeter - Manual (Page 87)

BARIUM
BARIUM CHLORIDE METHOD • CODE 3638-SC
QUANTITY CONTENTS CODE
50 g Barium Reagent Powder 6330-H
1 Spoon, 0.5g, plastic 0698
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents go
to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or
fax.
Barium is a naturally occurring metal that is found in rocks and, in trace amounts, in
natural waters. A barium concentration above 2 ppm in drinking water is a classifi ed
as a contaminant. Barium sulfate is used in the medical fi eld as an X-ray radio
contrast agent for imaging the gastrointestinal tract. Barium has many industrial
applications. It is used in the manufacture of paints, brakes, root canal fi llings,
glass, and motor oil detergents. Barium nitrate imparts a bright yellow-green color to
fi reworks and fl ares. Barium sulfate is a component of oil well drilling mud which is
used to lubricate drill bits. Barium is also a constituent of some electro ceramics and
high temperature yttrium barium copper oxide (YBCO) superconductors.
APPLICATION: Industrial
RANGE: 0 – 200 ppm barium
MDL: 5 ppm
METHOD: Barium is precipitated in an acid medium with
sodium sulfate to form a barium sulfate suspension in
proportion to the amount of barium present.
SAMPLE HANDLING &
PRESERVATION:
Barium samples may be preserved by refrigeration at
4°C up to 7 days in glass or plastic containers without
any change in concentration.
INTERFERENCES: Suspended matter and color interference may be
removed by a fi ltration step. Silica in excess of 500
mg/L will interfere. Check for stray light interference
(see page 69).
Test P
rocedures
SMART3 Test Procedures 02.12 BARIUM