Measuring the Fumarate Content in Gelatin

Recently, Santini et al. [69] prepared a fumarate-selective electrode and proved its applicability in the analysis of several dietetic products. The electrode was made of a mercury fumarate (Hg2C4H204) containing a pellet. Main parameters were 0.8 g weight, 6 mm thickness, and about 12 mm diameter. The pellet was glued on a tubular glass body. The internal contact was made through a mercury pool introduced into the lumen of the tube. 

For preparation of the pellet, solid Hg2C4H204 and liquid mercury were homogenized in a ratio of 1.9 03. The obtained powder was mixed with the equal weight of graphite powder and in a press mould 9 tons pressure was employed. 

---