186
5 g Solid Sample
1
Saliva I
50ml
1
Gastric Juice
100 ml
Duodenum Juice
100 ml
Bile Juice
50ml
1
Centrifugation
Filtration
Analysis
T. Schiindorf et al.
30 min shaking
addition of 300 ml of bidistilled water
15 min shaking, then pH-test ifpH > 2,5 (considerably), then
dropwise addition of cone. HCI. shaking continued, total 3
hrs, aliquot of 10 ml for centrifugation, filtration and
ANALYSIS
15 min shaking, then pH-test if pH < 7.5
(considerably), then dropwise addition of cone. aq.
Na2COl. shaking continued, total 6 hrs
Fig. 1. Flow chart for treatment of solid samples with digestive model juices
colloidal fractions by BreI or KMnO 4 to inorganic Hg followed by reduction
(DIN 38406 E12), after the scheme shown in Fig. 2.