Iron, Bipyridyl method 3648-sc – LaMotte SMART 2 Electronic Soil Lab User Manual
Page 63
IRON
BIPYRIDYL METHOD
3648-SC
QUANTITY
CONTENTS
CODE
30 mL
*Iron Reagent #1
*V-4450-G
5 g
*Iron Reagent #2 Powder
*V-4451-C
1
Pipet, 0.5 mL
0353
1
Spoon, 0.1 g
0699
*WARNING: Reagents marked with a * are considered to be potential health hazards. To view
or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or
www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.
Iron is essential to the formation of chlorophyll, and iron deficiency causes
chlorosis. While most soils contain abundant iron, only a fraction is soluble
and readily available to the growing plant. This is particularly true in neutral or
alkaline soils. Acid soils contain higher levels of available iron.
RANGE:
0.00-30.00 ppm Iron
METHOD:
Ferric iron is reduced to ferrous iron and subsequently
forms a colored complex with bipyridyl for a
quantitative measure of total iron.
INTERFERENCES:
Strong oxidizing agents interfere, as well as copper
and cobalt in excess of 5.0 mg/L
SMART2 SOIL MANUAL 1.07
63