WASHINGTON — Unable to find a country willing to dispose of Syria’s chemical weapons, the United States is considering plans to place the chemical components of the weapons on a barge where they would be dissolved or incinerated, according to senior American officials.

The two systems under review are intended to destroy the precursor materials that are designed to be combined to form chemical munitions. Syria’s smaller arsenal of operational chemical weapons would be destroyed separately, officials said.

Officials from the Organization for the Prohibition of Chemical Weapons, which is operating in Syria to locate and identify the weapons, would monitor the destruction, which would be carried out following safety standards set by legislation in the United States and the European Union, according to officials familiar with the proposal. Officials did not say whether any chemical residue would be dumped in the ocean.  […]