Handling query parameters with multiple question marks in Angular 2

So basically I couldn't get the correct result with my query parameters. For example we have a query parameter that looks like this:

?encryptedId=zxcvbnm?:112233

The returned result would just be zxcvbnm, the second question mark and all the succeeding characters to it are all omitted.

I've already tried this:

this.businessId = this.router.parseUrl(this.router.url).queryParams["bid"];

and this:

this.activatedRoute.queryParams.subscribe((queryParams: Params) => {
      this.businessId = queryParams['id'];
    }); 

but both codes return the same result. I want to capture everything. Please help. Thanks!